foster mother

American  

noun

1. a woman who takes the place of a mother in raising a child.

2. a nurse.

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foster mother British  

noun

1. a woman who looks after or brings up a child or children as a mother, in place of the natural or adoptive mother

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Etymology

Origin of foster mother

before 1000; Middle English; Old English

Example Sentences

As Laura, the foster mother in “Bring Her Back,” Ms. Hawkins turns the smile up to terrifying.

From The Wall Street Journal

While legal custody stayed with Sovann Komar and the foster mothers received a salary and allowances, they were encouraged to treat the children as their own.

From The Wall Street Journal

His foster mother encouraged him to go out to dances.

From BBC

Justin and his two older siblings lived in a different home with a foster mother.

From Los Angeles Times

The child died in his foster mother's arms in October 2018, having suffered complications arising from surgery to insert a feeding tube into his stomach.

From BBC