dreadlocks (n.)youdaoicibaDictYouDict[dreadlocks 词源字典]
1960, from dread + locks (see lock (n.2)). The style supposedly based on that of East African warriors. So called from the dread they presumably aroused in beholders, but Rastafarian dread (1974) also has a sense of "fear of the Lord," expressed in part as alienation from contemporary society.[dreadlocks etymology, dreadlocks origin, 英语词源]