/ Dictionary / Index R Ruston: Meaning and Definition of Find definitions for: Rus•ton Pronunciation: (rus'tun), [key] — n. a city in N Louisiana. 20,585. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rust mite rustout 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