D defs.my
Entry 1 sense Webster, 1913

bo's'n

· IPA /ˈbəʊsn̩/
01 n. a petty officer on a merchant ship who controls the work of other seamen.
  1. 1.
    a petty officer on a merchant ship who controls the work of other seamen.
Syn. boatswain, bos'n, bosun, bo'sun.