lame (adj.)youdaoicibaDictYouDict[lame 词源字典]
Old English lama "crippled, lame; paralytic, weak," from Proto-Germanic *lamon (cognates: Old Norse lami, Dutch and Old Frisian lam, German lahm "lame"), "weak-limbed," literally "broken," from PIE root *lem- "to break; broken," with derivatives meaning "crippled" (cognates: Old Church Slavonic lomiti "to break," Lithuanian luomas "lame"). In Middle English, "crippled in the feet," but also "crippled in the hands; disabled by disease; maimed." Sense of "socially awkward" is attested from 1942. Noun meaning "crippled persons collectively" is in late Old English.[lame etymology, lame origin, 英语词源]