tail-pipe (n.)youdaoicibaDictYouDict[tail-pipe 词源字典]
also tailpipe, 1757, "small pipe fixed at the swell of a musket to receive the ramrod," from tail (n.1) + pipe (n.). From 1832 as "suction pipe of a pump;" 1907 as "exhaust pipe of an automobile."[tail-pipe etymology, tail-pipe origin, 英语词源]