柯林斯詞典boatswain (also bosun or bo's'n) 1. N a petty officer on a merchant ship or a warrant officer on a warship who is responsible for the maintenance of the ship and its equipment 水手長(zhǎng) 返回 boatswain劍橋詞典the officer on a ship who is responsible for taking care of the ship's equipment 水手長(zhǎng) 返回 boatswain