Breadcrumb Home > Thesaurus > F Synonyms of firestone Find synonyms for: Noun 1. firestone, flint usage: a piece of flint that is struck to light a fire 2. firestone, sandstone usage: a sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of firestone (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: fatuous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language