/ Thesaurus / R Synonyms of roller bit Find synonyms for: Noun1. rock bit, roller bit, drilling bit, drill bitusage: a drill bit that has hardened rotating rollersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language