/ Dictionary / Index H halibut: Meaning and Definition of Find definitions for: hal•i•but Pronunciation: (hal'u-but, hol'-), [key] — pl. -but, -buts. either of two large flatfishes, Hippoglossus hippoglossus, of the North Atlantic, or H. stenolepis, of the North Pacific, used for food. any of various other similar flatfishes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: halibut (Thesaurus) half-witted Halicarnassus Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language