foster parent

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a person who acts as parent and guardian for a child in place of the child's natural parents but without legally adopting the child (Freq. 1)
• Syn:
foster-parent
• Hypernyms:
defender, guardian, protector, shielder
• Hyponyms:
foster-father, foster father, foster-mother, foster mother