/ Dictionary / Index R roach back: Meaning and Definition of Find definitions for: roach' back" Pronunciation: [key] an arched back, as of a dog. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. roach roach clip 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