bosun bostryx • bo'sun · · · Info · Definitions · Synonyms · Characters · · bosun · · Text Latin · · Script 5 · · Length 2 · · Syllables Definitions · · · (noun) a petty officer on a merchant ship who controls the work of other seamen. Synonyms: boatswain, bos'n, bo's'n, bo'sun. · · Noun Definition 1 Synonyms · · · boatswain · · Synonym 1 bos'n · · Synonym 2 bo's'n · · Synonym 3 bo'sun · · Synonym 4 Characters · · b latin small letter b U+0062 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 u latin small letter u U+0075