"royal tax in Medieval England," O.E. gield "payment, tribute" (cf. M.H.G. gelt "payment, contribution," Ger. geld "money," O.N. gjald "payment," Goth. gild "tribute, tax"), from PIE base of yield (q.v.).
geld (v.)
"to castrate," c.1300, from O.N. gelda "castrate," from geldr "barren," from P.Gmc. *galdu- (cf. O.H.G. galt "barren," said of a cow). The noun gelding (1296) is from O.N. geldingr.