Thick a. [Compar. Thicker superl. Thickest.]
 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.”
 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.]
 8. Dull; not quick; as, thick of fearing.
    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.