Fóster-módor

According to the Old English Dictionary:

-móder, fóstor-módor, féster-módor, -módur, fǽster-módor;

fóster-módor

f. A FOSTER-MOTHER, nurse; altrix, nutrix :-- Hwæðer hit oncneówe his fóstermódor whether it knew its foster-mother, Bt. 3, 1; Fox 4, 30. Fóstermóder altrix vel nutrix, Wrt. Voc. 72, 38. Ic gean mínre fósterméder ðæs landes æt Westúne I give to my mother the land at Weston, Th. Diplm. 560, 25. foster-modor