/ Dictionary / Index R Rumsey: Meaning and Definition of Find definitions for: Rum•sey Pronunciation: (rum'zē), [key] 1743–92, U.S. engineer and inventor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rumrunner run Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language