fóstra

Etymology 1
From.

Noun

 * 1)  foster mother
 * 2) nurse woman hired to bring up a child
 * 3) a nursery school/pre-school/kindergarten caretaker/teacher (usually female; a man in such a role may also be called )

Etymology 2
From.

Verb

 * 1) to foster, to bring up, to nurture