/ Thesaurus / C Synonyms of carriage bolt Find synonyms for: Noun1. carriage bolt, boltusage: a roundheaded bolt for timber; threaded along part of the shank; inserted into holes already drilledWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language