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. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: hortatory Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language