FATTY

fatty, fat

(adjective) containing or composed of fat; “fatty food”; “fat tissue”

fatso, fatty, fat person, roly-poly, butterball

(noun) a rotund individual

Source: WordNet® 3.1

Etymology 1

Adjective

fatty (comparative fattier, superlative fattiest)

Containing, composed of, or consisting of fat.

Like fat; greasy.

(slang) Literally or figuratively large.

Etymology 2

Noun

fatty (plural fatties)

(pejorative, slang) An obese person.

(slang) A large marijuana cigar; a blunt.

Synonyms

• See also fat person

• See also marijuana cigarette

Source: Wiktionary

Fat"ty, a.

Definition: Containing fat, or having the qualities of fat; greasy; gross; as, a fatty substance. Fatty acid (Chem.), any one of the paraffin series of monocarbonic acids, as formic acid, acetic, etc.; -- so called because the higher members, as stearic and palmitic acids, occur in the natural fats, and are themselves fatlike substances.

– Fatty clays. See under Clay.

– Fatty degeneration (Med.), a diseased condition, in which the oil globules, naturally present in certain organs, are so multiplied as gradually to destroy and replace the efficient parts of these organs.

– Fatty heart, Fatty liver, etc. (Med.), a heart, liver, etc., which have been the subjects of fatty degeneration or infiltration.

– Fatty infiltration (Med.), a condition in which there is an excessive accumulation of fat in an organ, without destruction of any essential parts of the latter.

– Fatty tumor (Med.), a tumor consisting of fatty or adipose tissue; lipoma.

Source: Webster’s Unabridged Dictionary 1913 Edition