/ Dictionary / Index R rock bass: Meaning and Definition of Find definitions for: rock' bass" Pronunciation: (bas), [key] a game fish, Ambloplites rupestris, of the sunfish family, inhabiting freshwater streams of the eastern U.S. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rock barnacle rock beauty Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language