1. [n]  the act of directing the eyes toward something and perceiving it visually; "he went out to have a look"; "his look was fixed on her eyes"; "he gave it a good looking at"; "his camera does his looking for him"
2. [n]  physical appearance; "I don't like the looks of this place"
3. [n]  the expression on a person's face; "a sad expression"; "a look of triumph"; "an angry face"
4. [n]  the general atmosphere of a place or situation and the effect that it has on people; "the feel of the city excited him"; "a clergyman improved the tone of the meeting"; "it had the smell of treason"
5. [v]  have a certain outward or facial expression; "How does she look?"; "The child looks unhappy"; "She looked pale after the surgery"
6. [v]  convey by one's expression; "She looked her devotion to me"
7. [v]  have faith or confidence in; "you can count on me to help you any time"; "Look to your friends for support"; "You can bet on that!"; "Depend on your family in times of crisis"
8. [v]  look forward to the probable occurrence of; "We were expecting a visit from our relatives"; "She is looking to a promotion"; "he is waiting to be drafted"
9. [v]  perceive with attention; direct one's gaze towards; "She looked over the expanse of land"; "Look at your child!"; "Look--a deer in the backyard!"
10. [v]  give a certain impression or have a certain outward aspect; "She seems to be sleeping"; "This appears to be a very difficult problem"; "This project looks fishy"; "They appeared like people who had not eaten or slept for a long time"
11. [v]  search or seek; "We looked all day and finally found the child in the forest"; "Look elsewhere for the perfect gift!"
12. [v]  take charge of or deal with; "Could you see about lunch?"; "I must attend to this matter"; "She took care of this business"
13. [v]  accord in appearance with; "You don't look your age!"
14. [v]  face in a certain direction, often with respect to another reference point; be opposite to; "The house looks north"; "My backyard look onto the pond"; "The building faces the park"

1. \Look\, v. i. [imp. & p. p. {Looked}; p. pr. & vb. n.
   {Looking}.] [OE. loken, AS. l[=o]cian; akin to G. lugen, OHG.
   luog[=e]n.]
   1. To direct the eyes for the purpose of seeing something; to
      direct the eyes toward an object; to observe with the eyes
      while keeping them directed; -- with various prepositions,
      often in a special or figurative sense. See Phrases below.
   2. To direct the attention (to something); to consider; to
      examine; as, to look at an action.
   3. To seem; to appear; to have a particular appearance; as,
      the patient looks better; the clouds look rainy.
            It would look more like vanity than gratitude.
                                                  --Addison.
            Observe how such a practice looks in another person.
                                                  --I. Watts.
   4. To have a particular direction or situation; to face; to
      front.
            The inner gate that looketh to north. --Ezek. viii.
                                                  3.
            The east gate . . . which looketh eastward. --Ezek.
                                                  xi. 1.
   5. In the imperative: see; behold; take notice; take care;
      observe; -- used to call attention.
            Look, how much we thus expel of sin, so much we
            expel of virtue.                      --Milton.
   Note: Look, in the imperative, may be followed by a dependent
         sentence, but see is oftener so used.
      Look that ye bind them fast.                --Shak.
      Look if it be my daughter.                  --Talfourd.
   6. To show one's self in looking, as by leaning out of a
      window; as, look out of the window while I speak to you.
      Sometimes used figuratively.
            My toes look through the overleather. --Shak.
   7. To await the appearance of anything; to expect; to
      anticipate.
            Looking each hour into death's mouth to fall.
                                                  --Spenser.
   {To look about}, to look on all sides, or in different
      directions.
   {To look about one}, to be on the watch; to be vigilant; to
      be circumspect or guarded.
   {To look after}.
      (a) To attend to; to take care of; as, to look after
          children.
      (b) To expect; to be in a state of expectation.
                Men's hearts failing them for fear, and for
                looking after those things which are coming on
                the earth.                        --Luke xxi.
                                                  26.
      (c) To seek; to search.
                My subject does not oblige me to look after the
                water, or point forth the place where to it is
                now retreated.                    --Woodward.
   {To look at}, to direct the eyes toward so that one sees, or
      as if to see; as, to look at a star; hence, to observe,
      examine, consider; as, to look at a matter without
      prejudice.
   {To look black}, to frown; to scowl; to have a threatening
      appearance.
            The bishops thereat repined, and looked black.
                                                  --Holinshed.
   {To look down on} or {upon}, to treat with indifference or
      contempt; to regard as an inferior; to despise.
   {To look for}.
      (a) To expect; as, to look for news by the arrival of a
          ship. ``Look now for no enchanting voice.'' --Milton.
      (b) To seek for; to search for; as, to look for lost
          money, or lost cattle.
   {To look forth}.
      (a) To look out of something, as from a window.
      (b) To threaten to come out. --Jer. vi. 1. (Rev. Ver.).
   {To look into}, to inspect closely; to observe narrowly; to
      examine; as, to look into the works of nature; to look
      into one's conduct or affairs.
   {To look on}.
      (a) To regard; to esteem.
                Her friends would look on her the worse.
                                                  --Prior.
      (b) To consider; to view; to conceive of; to think of.
                I looked on Virgil as a succinct, majestic
                writer.                           --Dryden.
      (c) To be a mere spectator.
                I'll be a candleholder, and look on. --Shak.
   {To look out}, to be on the watch; to be careful; as, the
      seaman looks out for breakers.
   {To look through}.
      (a) To see through.
      (b) To search; to examine with the eyes.
   {To look to} or {unto}.
      (a) To watch; to take care of. ``Look well to thy herds.''
          --Prov. xxvii. 23.
      (b) To resort to with expectation of receiving something;
          to expect to receive from; as, the creditor may look
          to surety for payment. ``Look unto me, and be ye
          saved.'' --Is. xlv. 22.
   {To look up}, to search for or find out by looking; as, to
      look up the items of an account.
   {To look up to}, to respect; to regard with deference.
   

2. \Look\, v. t.
   1. To look at; to turn the eyes toward.
   2. To seek; to search for. [Obs.]
            Looking my love, I go from place to place.
                                                  --Spenser.
   3. To expect. [Obs.] --Shak.
   4. To influence, overawe, or subdue by looks or presence as,
      to look down opposition.
            A spirit fit to start into an empire, And look the
            world to law.                         --Dryden.
   5. To express or manifest by a look.
            Soft eyes looked love to eyes which spake again.
                                                  --Byron.
   {To look daggers}. See under {Dagger}.
   {To look in the face}, to face or meet with boldness or
      confidence; hence, sometimes, to meet for combat.
   {To look out}, to seek for; as, prudent persons look out
      associates good reputation.
   

3. \Look\, n.
   1. The act of looking; a glance; a sight; a view; -- often in
      certain phrases; as, to have, get, take, throw, or cast, a
      look.
            Threw many a northward look to see his father Bring
            up his powers; but he did long in vain. --Shak.
   2. Expression of the eyes and face; manner; as, a proud or
      defiant look. ``Gentle looks.'' --Shak.
            Up ! up! my friends, and clear your looks.
                                                  --Wordsworth.
   3. Hence; Appearance; aspect; as, the house has a gloomy
      look; the affair has a bad look.
            Pain, disgrace, and poverty have frighted looks.
                                                  --Locke.
            There was something that reminded me of Dante's Hell
            in the look of this.                  --Carlyle.
   

A specification language.

["A Look at Algebraic Specifications", S.N. Zilles et al, IBM RR, 1982].