coxswain: [15] A coxswain was originally a servant, or swain, whose job was to steer a ship’s boat, or cock (cock comes from Old French coque, which was probably a descendant via late Latin caudica ‘canoe’ of Latin caudex ‘tree trunk’, and swain is a borrowing from Old Norse sveinn ‘boy, servant’). The abbreviation cox seems to have developed in the 19th century. [coxswain etymology, coxswain origin, 英语词源]