/ Dictionary / Index J jarhead: Meaning and Definition of Find definitions for: jar•head Pronunciation: ( jär'hed"), [key] — n. Slang (disparaging) a U.S. Marine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jargonize jarl Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language