\Thick\ (th[i^]k), a. [Compar. {Thicker} (-[~e]r); superl.
{Thickest}.] [OE. thicke, AS. [thorn]icce; akin to D. dik,
OS. thikki, OHG. dicchi thick, dense, G. dick thick, Icel.
[thorn]ykkr, [thorn]j["o]kkr, and probably to Gael. & Ir.
tiugh. Cf. {Tight}.]
1. Measuring in the third dimension other than length and
   breadth, or in general dimension other than length; --
   said of a solid body; as, a timber seven inches thick.
         Were it as thick as is a branched oak. --Chaucer.
         My little finger shall be thicker than my father's
         loins.                                --1 Kings xii.
                                               10.
2. Having more depth or extent from one surface to its
   opposite than usual; not thin or slender; as, a thick
   plank; thick cloth; thick paper; thick neck.
3. Dense; not thin; inspissated; as, thick vapors. Also used
   figuratively; as, thick darkness.
         Make the gruel thick and slab.        --Shak.
4. Not transparent or clear; hence, turbid, muddy, or misty;
   as, the water of a river is apt to be thick after a rain.
   ``In a thick, misty day.'' --Sir W. Scott.
5. Abundant, close, or crowded in space; closely set;
   following in quick succession; frequently recurring.
         The people were gathered thick together. --Luke xi.
                                               29.
         Black was the forest; thick with beech it stood.
                                               --Dryden.
6. Not having due distinction of syllables, or good
   articulation; indistinct; as, a thick utterance.
7. Deep; profound; as, thick sleep. [R.] --Shak.
8. Dull; not quick; as, thick of fearing. --Shak.
         His dimensions to any thick sight were invincible.
                                               --Shak.
9. Intimate; very friendly; familiar. [Colloq.]
         We have been thick ever since.        --T. Hughes.
Note: Thick is often used in the formation of compounds, most
      of which are self-explaining; as, thick-barred,
      thick-bodied, thick-coming, thick-cut, thick-flying,
      thick-growing, thick-leaved, thick-lipped,
      thick-necked, thick-planted, thick-ribbed,
      thick-shelled, thick-woven, and the like.
{Thick register}. (Phon.) See the Note under {Register}, n.,
   7.
{Thick stuff} (Naut.), all plank that is more than four
   inches thick and less than twelve. --J. Knowles.
Syn: Dense; close; compact; solid; gross; coarse.

\Thick\, n.
1. The thickest part, or the time when anything is thickest.
         In the thick of the dust and smoke.   --Knolles.
2. A thicket; as, gloomy thicks. [Obs.] --Drayton.
         Through the thick they heard one rudely rush.
                                               --Spenser.
         He through a little window cast his sight Through
         thick of bars, that gave a scanty light. --Dryden.
{Thick-and-thin block} (Naut.), a fiddle block. See under
   {Fiddle}.
{Through thick and thin}, through all obstacles and
   difficulties, both great and small.
         Through thick and thin she followed him. --Hudibras.
         He became the panegyrist, through thick and thin, of
         a military frenzy.                    --Coleridge.

\Thick\ (th[i^]k), adv. [AS. [thorn]icce.]
1. Frequently; fast; quick.
2. Closely; as, a plat of ground thick sown.
3. To a great depth, or to a greater depth than usual; as,
   land covered thick with manure.
{Thick and threefold}, in quick succession, or in great
   numbers. [Obs.] --L'Estrange.

\Thick\, v. t. & i. [Cf. AS. [thorn]iccian.]
To thicken. [R.]
      The nightmare Life-in-death was she, Who thicks man's
      blood with cold.                         --Coleridge.