1. [n]  a clear or unobstructed space or expanse of land or water; "finally broke out of the forest into the open"
2. [n]  the state of being free of suspicion; "investigation showed that he was in the clear"
3. [adv]  in an easily perceptible manner; "could be seen clearly under the microscope"; "She cried loud and clear"
4. [adv]  completely; "read the book clear to the end"; "slept clear through the night"; "there were open fields clear to the horizon"
5. [adj]  of complexion; without such blemishes as e.g. acne; "the clear complexion of a healthy young woman"
6. [adj]  clear to the mind; "a clear and present danger"; "a clear explanation"; "a clear case of murder"; "a clear indication that she was angry"; "gave us a clear idea of human nature"
7. [adj]  free from cloudiness; allowing light to pass through; "clear water"; "clear plastic bags"; "clear glass"; "the air is clear and clean"
8. [adj]  free from confusion or doubt; "a complex problem requiring a clear head"; "not clear about what is expected of us"
9. [adj]  (meteorology) free from clouds or mist or haze; "on a clear day"
10. [adj]  accurately stated or described; "a set of well-defined values"
11. [adj]  characterized by ease and quickness in perceiving; "clear mind"; "a percipient author"
12. [adj]  clear and distinct to the senses; easily perceptible; "as clear as a whistle"; "clear footprints in the snow"; "the letter brought back a clear image of his grandfather"; "a spire clean-cut against the sky"; "a clear-cut pattern"
13. [adj]  (especially of a title) "I have clear title to this property"
14. [adj]  freed from any question of guilt; "is absolved from all blame"; "was now clear of the charge of cowardice"; "his official honor is vindicated"
15. [adj]  easily deciphered
16. [adj]  clear of charges or deductions; "a clear profit"
17. [adj]  affording free passage or view; "a clear view"; "a clear path to victory"
18. [adj]  free from flaw or blemish or impurity; "a clear perfect diamond"
19. [adj]  (of sound or color) free from anything that dulls or dims; "efforts to obtain a clean bass in orchestral recordings"; "clear laughter like a waterfall"; "clear reds and blues"; "a light lilting voice like a silver bell"
20. [adj]  free of restrictions or qualifications; "a clean bill of health"; "a clear winner"
21. [adj]  characterized by freedom from troubling thoughts; especially e.g. guilt; "a clear conscience"; "looked at her questioner with clear untroubled eyes"
22. [v]  make free from confusion or ambiguity; make clear; "Could you clarify these remarks?"; "Clear up the question of who is at fault"
23. [v]  free (the throat) by making a rasping sound; "Clear the throat"
24. [v]  rid of obstructions; "Clear your desk"
25. [v]  remove; "clear the leaves from the lawn"; "Clear snow from the road"
26. [v]  make a way or path by removing objects; "Clear a path through the dense forest"
27. [v]  remove the occupants of; "Clear the building"
28. [v]  remove (people) from a building; "clear the patrons from the theater after the bomb threat"
29. [v]  rid of instructions or data; "clear a memory buffer"
30. [v]  make clear, bright, light, or translucent; "The water had to be cleared through filtering"
31. [v]  settle, as of a debt; "clear a debt"
32. [v]  grant authorization or clearance for; "Clear the manuscript for publication"; "The rock star never authorized this slanderous biography"
33. [v]  pronounce not guilty of criminal charges; "The suspect was cleared of the murder charges"
34. [v]  pass an inspection or receive authorization; "clear customs"
35. [v]  pass by, over, or under without making contact; "the balloon cleared the tree tops"
36. [v]  go away or disappear; "The fog cleared in the afternoon"
37. [v]  sell; "We cleared a lot of the old model cars"
38. [v]  be debited and credited to the proper bank accounts; "The check will clear within 2 business days."
39. [v]  earn on some commercial or business transaction; earn as salary or wages; "How much do you make a month in your new job?"; "She earns a lot in her new job"; "this merger brought in lots of money"; "He clears $5,000 each month"
40. [v]  make as a net profit; "The company cleared $1 million"
41. [v]  yield as a net profit; "This sale netted me $1 million"
42. [v]  clear from impurities, blemishes, pollution, etc.; "clear the water before it can be drunk"
43. [v]  free from payment of customs duties, as of a shipment; "Clear the ship and let it dock"
44. [v]  go unchallenged; be approved; "The bill cleared the House"
45. [v]  become clear; "The sky cleared after the storm"

Clear
Clear

more details ...

1. \Clear\ (kl[=e]r), a. [Compar. {Clearer} (-[~e]r); superl.
   {Clearest}.] [OE. cler, cleer, OF. cler, F. clair, fr.L.
   clarus, clear, broght, loud, distinct, renownwd; perh. akin
   to L. clamare to call, E. claim. Cf. {Chanticleer},
   {Clairvoyant}, {Claret}, {Clarufy}.]
   1. Free from opaqueness; transparent; bright; light;
      luminous; unclouded.
            The stream is so transparent, pure, and clear.
                                                  --Denham.
            Fair as the moon, clear as the sun.   --Canticles
                                                  vi. 10.
   2. Free from ambiguity or indistinctness; lucid; perspicuous;
      plain; evident; manifest; indubitable.
            One truth is clear; whatever is, is right. --Pope.
   3. Able to perceive clearly; keen; acute; penetrating;
      discriminating; as, a clear intellect; a clear head.
            Mother of science! now I feel thy power Within me
            clear, not only to discern Things in their causes,
            but to trace the ways Of highest agents. --Milton.
   4. Not clouded with passion; serene; cheerful.
            With a countenance as clear As friendship wears at
            feasts.                               --Shak.
   5. Easily or distinctly heard; audible; canorous.
            Hark! the numbers soft and clear Gently steal upon
            the ear.                              --Pope.
   6. Without mixture; entirely pure; as, clear sand.
   7. Without defect or blemish, such as freckles or knots; as,
      a clear complexion; clear lumber.
   8. Free from guilt or stain; unblemished.
            Statesman, yet friend to truth! in soul sincere, In
            action faithful, and in honor clear.  --Pope.
   9. Without diminution; in full; net; as, clear profit.
            I often wished that I had clear, For life, six
            hundred pounds a-year.                --Swift
            .
   10. Free from impediment or obstruction; unobstructed; as, a
       clear view; to keep clear of debt.
             My companion . . . left the way clear for him.
                                                  --Addison.
   11. Free from embarrassment; detention, etc.
             The cruel corporal whispered in my ear, Five
             pounds, if rightly tipped, would set me clear.
                                                  --Gay.
   {Clear breach}. See under {Breach}, n., 4.
   {Clear days} (Law.), days reckoned from one day to another,
      excluding both the first and last day; as, from Sunday to
      Sunday there are six clear days.
   {Clear stuff}, boards, planks, etc., free from knots.
   Syn: Manifest; pure; unmixed; pellucid; transparent;
        luminous; obvious; visible; plain; evident; apparent;
        distinct; perspicuous. See {Manifest}.
   

2. \Clear\ (kl[=e]r), n. (Carp.)
   Full extent; distance between extreme limits; especially; the
   distance between the nearest surfaces of two bodies, or the
   space between walls; as, a room ten feet square in the clear.
   

3. \Clear\, adv.
   1. In a clear manner; plainly.
            Now clear I understand What oft . . . thoughts have
            searched in vain.                     --Milton.
   2. Without limitation; wholly; quite; entirely; as, to cut a
      piece clear off.
   

4. \Clear\, v. t. [imp. & p. p. {Cleared}; p. pr. & vb. n.
   {Clearing}.]
   1. To render bright, transparent, or undimmed; to free from
      clouds.
            He sweeps the skies and clears the cloudy north.
                                                  --Dryden.
   2. To free from impurities; to clarify; to cleanse.
   3. To free from obscurity or ambiguity; to relive of
      perplexity; to make perspicuous.
            Many knotty points there are Which all discuss, but
            few can clear.                        --Prior.
   4. To render more quick or acute, as the understanding; to
      make perspicacious.
            Our common prints would clear up their
            understandings.                       --Addison
   5. To free from impediment or incumbrance, from defilement,
      or from anything injurious, useless, or offensive; as, to
      clear land of trees or brushwood, or from stones; to clear
      the sight or the voice; to clear one's self from debt; --
      often used with of, off, away, or out.
            Clear your mind of cant.              --Dr. Johnson.
            A statue lies hid in a block of marble; and the art
            of the statuary only clears away the superfluous
            matter.                               --Addison.
   6. To free from the imputation of guilt; to justify,
      vindicate, or acquit; -- often used with from before the
      thing imputed.
            I . . . am sure he will clear me from partiality.
                                                  --Dryden.
            How! wouldst thou clear rebellion?    --Addison.
   7. To leap or pass by, or over, without touching or failure;
      as, to clear a hedge; to clear a reef.
   8. To gain without deduction; to net.
            The profit which she cleared on the cargo.
                                                  --Macaulay.
   {To clear a ship at the customhouse}, to exhibit the
      documents required by law, give bonds, or perform other
      acts requisite, and procure a permission to sail, and such
      papers as the law requires.
   {To clear a ship for action}, or {To clear for action}
      (Naut.), to remove incumbrances from the decks, and
      prepare for an engagement.
   {To clear the land} (Naut.), to gain such a distance from
      shore as to have sea room, and be out of danger from the
      land.
   {To clear hawse} (Naut.), to disentangle the cables when
      twisted.
   {To clear up}, to explain; to dispel, as doubts, cares or
      fears.
   

5. \Clear\ (kl[=e]r), v. i.
   1. To become free from clouds or fog; to become fair; --
      often followed by up, off, or away.
            So foul a sky clears not without a storm. --Shak.
            Advise him to stay till the weather clears up.
                                                  --Swift.
   2. To disengage one's self from incumbrances, distress, or
      entanglements; to become free. [Obs.]
            He that clears at once will relapse; for finding
            himself out of straits, he will revert to his
            customs; but he that cleareth by degrees induceth a
            habit of frugality.                   --Bacon.
   3. (Banking) To make exchanges of checks and bills, and
      settle balances, as is done in a clearing house.
   4. To obtain a clearance; as, the steamer cleared for
      Liverpool to-day.
   {To clear out}, to go or run away; to depart. [Colloq.]
   

A specification language based on initial algebras.

["An Informal Introduction to Specification Using CLEAR", R.M. Burstall in The Correctness Problem in Computer Science, R.S. Boyer et al eds, Academic Press 1981, pp. 185-213].