The noun thick has 1 sense (first 1 from tagged texts)
1. (1) midst, thick -- (the location of something surrounded by other things; "in the midst of the crowd")
Overview of adj thick
The adj thick has 10 senses (first 4 from tagged texts)
1. (25) thick -- (not thin; of a specific thickness or of relatively great extent from one surface to the opposite usually in the smallest of the three solid dimensions; "an inch thick"; "a thick board"; "a thick sandwich"; "spread a thick layer of butter"; "thick coating of dust"; "thick warm blankets")
2. (7) compact, dense, thick -- (having component parts closely crowded together; "a compact shopping center"; "a dense population"; "thick crowds"; "a thick forest"; "thick hair")
4. (2) slurred, thick -- (spoken as if with a thick tongue; "the thick speech of a drunkard"; "his words were slurred")
5. dense, thick -- (hard to pass through because of dense growth; "dense vegetation"; "thick woods")
6. thick, deep -- ((of darkness) very intense; "thick night"; "thick darkness"; "a face in deep shadow"; "deep night")
7. compact, heavyset, stocky, thick, thickset -- (heavy and compact in form or stature; "a wrestler of compact build"; "he was tall and heavyset"; "stocky legs"; "a thick middle-aged man"; "a thickset young man")
8. chummy, buddy-buddy, thick -- ((used informally) associated on close terms; "a close friend"; "the bartender was chummy with the regular customers"; "the two were thick as thieves for months")