/ Dictionary / Index H humpback: Meaning and Definition of Find definitions for: hump•back Pronunciation: (hump'bak"), [key] — n. a back that is humped in a convex position. kyphosis. the humpback whale. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: humpback (Thesaurus) hump humpbacked Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language