thickthickthickerthickestadjective (thicker, thickest)1far from one side to the other: The walls are very thick. It's cold outside, so wear a thick coat.oppositethin2You use thick to say or ask how far something is from one side to the other: The ice is six centimetres thick.3with a lot of people or things close together: thick dark hair4If a liquid is thick, it does not flow easily: This paint is too thick.oppositethin5difficult to see through: thick smoke▶ thicknessthicknessthicknessesnoun (no plural): The wood is 3 cm in thickness.
# adjective. - with opposite sides or surfaces that are a great or relatively great distance apart. * thick slices of bread - made up of a large number of things or people close together. * his hair was long and thick - (of a liquid or a semiliquid substance) relatively firm in consistency; not flowing freely. * thick mud - of low intelligence; stupid. * he's a bit thick - (of a voice) not clear or distinct; hoarse or husky. * Guy's voice was thick with desire - having a very close, friendly relationship. * he's very thick with the new boss
# noun. - the busiest or most crowded part of something; the middle of something. * we were in the thick of the battle
# adverb. - in or with deep, dense, or heavy mass. * bread spread thick with butter