yelt

Inherited from Middle English yelte, from Old English ġilte, *ġielte, from Proto-West Germanic *galtijā, extension of Proto-Germanic *galtô, from Proto-Indo-European *gʰel-. Probably cognate to the equivelant English gilt, from Middle English gilt, gylt, from Old Norse gyltr; compare geld (“castrate”), Old Norse galtr, gǫltr (“castrated boar, hog”), Danish galt, Icelandic göltur, Norwegian Bokmål galt, Swedish galt (“boar, hog”); as well as English gelde, Old English gelde, Scots yelt, yell (“sterile”), ceasing to give milk, regional English yell (“dry (of cow)”), Old Norse geldr (“infertile, regarding cow”), Old Danish gold, Old Swedish infertile, fruitless.

来源：wiktionary