a female parent of a child or animal; a person who is acting as a mother to a child
I want to buy a present for my mother and father.
the relationship between mother and baby
She's the mother of twins.
a mother of three (= with three children)
an expectant (= pregnant) mother
She was a wonderful mother to both her natural and adopted children.
the mother chimpanzee caring for her young
the title of a woman who is head of a convent (= a community of nuns )
when you were very young
I learnt these songs at my mother's knee.
used to emphasize that sth is very large, unpleasant, important, etc.
I got stuck in the mother of all traffic jams.
a difficult new problem forces people to think of a solution to it
论年龄足以当某人的爹 / 娘（尤指双方在爱情或性关系方面不相配）
very much older than sb (especially used to suggest that a romantic or sexual relationship between the two people is not appropriate)
to care for sb/sth because you are their mother, or as if you were their mother
He was a disturbed child who needed mothering.
Stop mothering me!