/ Dictionary / Index S service cap: Meaning and Definition of Find definitions for: serv'ice cap" Pronunciation: [key] — Mil. Mil. a saucer-shaped uniform cap with a visor, standard in the U.S. Army and Air Force. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. service break service center 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