/ Thesaurus / R Synonyms of rock drill Find synonyms for: Noun1. bore bit, borer, rock drill, stone drill, drillusage: a drill for penetrating rockWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: beseech Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language