Having relatively great extent or depth from one surface to its opposite; being relatively of great depth, or extent from side to side: opposed to thin.Having (a specified) measurement in a direction perpendicular to that of the length and breadth; measuring (so much) between opposite surfaces: as, a board one inch thick.Having numerous separate parts or individuals set or occurring close together; dense; compactly arranged.Having relatively great consistency; also, containing much solid matter in suspension or solution; approaching the consistency of a solid; inspissated: as, thick cream; thick paste; often of liquids, turbid; muddy; cloudy.Heavy; profound; intense; extreme; great.Obscure; not clear; especially, laden with clouds or vapor; misty; foggy: noting the atmosphere, the weather, etc.Mentally dull; stupid: devoid of intelligence: as, to have a thick head.Mentally clouded; befogged; slow, weak, or defective in sense-perception, sometimes in moral perception: as, to be thick of sight, hearing, etc.: said of persons or of the organs of sense.Indistinct in utterance; inarticulate; not clear.Abounding; filled; plentifully supplied: followed by with (formerly of or for).Numerous; plentiful; frequent; crowded.Being of a specified number; numbering.Close in friendship; intimate.n. The thickest part of anything.n. The densest or most crowded part; the place of greatest resort or abundance.n. The spot of greatest intensity or activity.n. The time when anything is thickest.n. A thicket; a coppice.n. A stupid person; a dullard; a blockhead; a numskull.In a thick manner, in any sense.To make thick; thicken.To increase in depth or girth; swell the proportions of (a solid body); fatten.To give firmer consistency to; inspissate.To make obscure or dark; hence, to hide; conceal.To become thick.