/ Thesaurus / B Synonyms of bo'sun Find synonyms for: Noun1. boatswain, bos'n, bo's'n, bosun, bo'sun, mariner, seaman, tar, Jack-tar, Jack, old salt, seafarer, gob, sea dogusage: a petty officer on a merchant ship who controls the work of other seamenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language