jolly boat (n.)youdaoicibaDictYouDict[jolly boat 词源字典]
1727, of unknown origin, probably from Danish jolle (17c.) or Dutch jol (1680s), both related to yawl; or it may be from Middle English jolywat (late 15c.) "a ship's small boat," of unknown origin.[jolly boat etymology, jolly boat origin, 英语词源]