/ Dictionary / Index R roach: Meaning and Definition of Find definitions for: roach Pronunciation: (rōch), [key] a cockroach. the butt of a marijuana cigarette. roach Pronunciation: (rōch), [key] — pl. roach•es, roach. a European freshwater fish, Rutilus rutilus, of the carp family. any of various similar fishes, as the golden shiner. a freshwater sunfish of the genus Lepomis, found in eastern North America. roach Pronunciation: (rōch), [key] —v.t. to clip or cut off (the mane of a horse); hog. to comb (hair) into a roach. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: roach (Thesaurus) ROA roach back Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language