One who takes the place of a father in nourishing and rearing a child; a nurse's husband.(noun)
The Century Dictionary (Public Domain)
Use "foster-father" in a sentence
"He was a sort of foster-father to the youth who startled the literary world with his brilliant and forceful prose, just as he amazed his associates by his freedom of thought and capacity for living."
"The foster-father has since been arrested, although police are continuing to search for his wife."
"The child's foster-father claims she had been bought for about $20 from a worker at a hospital devastated in the disaster, which killed over 30,000 people."