Fóst-raþ

According to the Old English Dictionary:

fóst-raþ

For Som. Ben. Lye substitute: Wrt. Voc. ii. 32, 41: fóstre. Add : [N.E.D. foster a nurse. Icel. fóstra a fostermother, nurse.]: fóstrian. Add: [Icel. fóstra to foster.] fost-raþ,fostraþ