gelding (n.)youdaoicibaDictYouDict[gelding 词源字典]
late 14c., "castrated animal" (especially a horse), also "a eunuch" (late 13c. as a surname), from Old Norse geldingr "wether; eunuch," from gelda "castrate" (see geld (v.)).[gelding etymology, gelding origin, 英语词源]