(1):

(superl.) 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.

(2):

(superl.) Dense; not thin; inspissated; as, thick vapors. Also used figuratively; as, thick darkness.

(3):

(superl.) Not transparent or clear; hence, turbid, muddy, or misty; as, the water of a river is apt to be thick after a rain.

(4):

(superl.) 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.

(5):

(superl.) Abundant, close, or crowded in space; closely set; following in quick succession; frequently recurring.

(6):

(superl.) Not having due distinction of syllables, or good articulation; indistinct; as, a thick utterance.

(7):

(superl.) Deep; profound; as, thick sleep.

(8):

(superl.) Dull; not quick; as, thick of fearing.

(9):

(superl.) Intimate; very friendly; familiar.

(10):

(n.) The thickest part, or the time when anything is thickest.

(11):

(n.) A thicket; as, gloomy thicks.

(12):

(adv.) Frequently; fast; quick.

(13):

(adv.) Closely; as, a plat of ground thick sown.

(14):

(adv.) To a great depth, or to a greater depth than usual; as, land covered thick with manure.

(15):

(v. t. & i.) To thicken.