Family members

a mother or father of a person or an animal

a man or boy with the same parents as another person

a woman or girl with the same parents as another person

the sister of someone's father or mother, or the wife of someone's uncle or aunt

the brother of someone's father or mother, or the wife of someone's uncle or aunt:

a child of a person's aunt or uncle, or, more generally, a distant (= not close) relation

a son of your sister or brother, or a son of the sister or brother of your husband or wife

a daugther of your sister or brother, or a daugther of the sister or brother of your husband or wife

the mother of a person's father or mother

the father of a person's father or mother:

the father or mother of a person's father or mother