A woman who has adopted a child, as opposed to a biological mother.

Alternative form of motherfucker

The woman from whom one inherits half of one's DNA and who is the source of one's mitochondrial DNA.

Misspelling of Mother Teresa.

A nun who worked among the poor for many decades in India.

A person who is completely unselfish to the point of being saintly.

Cape Town

(US) The mother of a child actor.

(geology) A large or rich vein of gold or of another precious mineral from which other branches extend. / (idiomatic, by extension) Any source of valuable or useful material.

(US, Canada) A day in honor of one's mother on the second Sunday in May in the United States and Canada.