/ Dictionary / Index G gibbon: Meaning and Definition of Find definitions for: gib•bon Pronunciation: (gib'un), [key] any small, slender, long-armed arboreal anthropoid ape of the genus Hylobates, of the East Indies and southern Asia: all gibbon species are reduced in number and some are very rare. Gib•bon Pronunciation: (gib'un), [key] 1737–94, English historian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gibbon (Thesaurus) gibble-gabble Gibbons Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language