hump (n.)youdaoicibaDictYouDict[hump 词源字典]
1680s (in hump-backed), from Dutch homp "lump," from Middle Low German hump "bump," from Proto-Germanic *hump-, from PIE *kemb- "to bend, turn, change, exchange." Replaced, or perhaps influenced by, crump, from Old English crump. A meaning attested from 1901 is "mound in a railway yard over which cars must be pushed," which may be behind the figurative sense of "critical point of an undertaking" (1914). Humpback whale is from 1725.[hump etymology, hump origin, 英语词源]