sloop
/sluːp/noun
1- a one-masted sailing boat with a mainsail and jib rigged fore and aft单桅帆船。
1.1
- （亦作sloop of war）historical a small square-rigged sailing warship with two or three masts〈史〉（两至三桅的）小型战舰。
1.2
- historical a small anti-submarine warship used for convoy escort in the Second World War.〈史〉（二次世界大战时担任反潜任务的）小型护航舰。
词源
early 17th cent.: from Dutch sloep（e）, of unknown origin.