/ Dictionary / Index R round whitefish: Meaning and Definition of Find definitions for: round' white'fish Pronunciation: [key] a whitefish, Prosopium cylindraceum, found in northern North America and Siberia, having silvery sides and a dark bronze back. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. roundup round window Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language