Having much flesh other than muscle; having an unusual amount of flesh; corpulent; obese: as, a fat man; a fat ox.Containing the substance called fat (see II.); containing or consisting of fat, oil, or grease; oily; greasy; unctuous: as, a fat dish; fat cheese.Hence Containing much resin; resinous: as, fat pine.Containing much plastic or unctuous matter; pinguid: said of clay which is free from intermingled sand, and consequently highly plastic; or of lime made from limestone which contains but a small amount (ten per cent. or less) of the ordinary impurities of limestone — silica, alumina, oxid of iron, etc.Having or showing, in mind or movement, the qualities of a fat animal; heavy; dull; stupid.Well supplied with what is needful or desired; abounding in comforts; prosperous.Abundant in production, or yielding large profits; rich in results or yield; profitable.Nautical, broad, as the quarter of a ship.n. A white or yellowish oily solid substance forming the chief part of the adipose tissue of animals, and also found in plants.n. The best or richest part of a thing.n. In type-setting, work which for any reason is unusually profitable to the compositor. See fat work, above.To make fat; fatten.To become fat; grow fat.n. A large open vessel for water, wine, or other liquids; a tub; a cistern: now usually vat (which see).n. A dry measure, generally equal to 9 bushels.In painting, rich; full of color.n. A local Australian term for fat or marketable cattle.In leather-manuf, to smear over with a heavy oil.