/ Dictionary / Index H highjacker: Meaning and Definition of Find definitions for: high•jack•er Pronunciation: (hī'jak"ur), [key] — n. hijacker. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: highjacker (Thesaurus) highjack high jinks Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language