/ Dictionary / Index R ring gear: Meaning and Definition of Find definitions for: ring' gear" Pronunciation: [key] — Mach. Mach. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ring gate ringgit Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language