(dated) One's mother. / A title given to a nun or a priestess.

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

(idiomatic, Britain) To pour out tea for others.

A pregnant woman, especially one expecting her first child. / A woman whose partner is pregnant.

(chiefly Canada, US) A vague, feel-good platitude, especially one made by a politician, that few people would be able to disagree with.

The state of being a mother. / Mothers, considered as a group.

Alternative form of motherfucker

The country of one's ancestors. / The country of one's birth. / Country of origin. / Mother country in contrast to its colonies.

Without a (living) mother. / Without mother (mucilaginous substance in fermenting liquid). / (figuratively) Without a history or predecessor.

(South Africa, Australia, slang) very, completely (especially in reference to drunkenness)