a daughter of the same parents as oneself or another person; a woman who behaves like a sister; a senior hospital nurse; a member of a religious society; nun
female sibling
Cases of word usage
1) a sister of one's father or mother (aunt)
2) an act of sexual intercourse between close relations, e.g. a brother and sister (incest)
3) a son of one's brother or sister (nephew)
4) a daughter of one's brother or sister (niece)
5) a brother or sister (the usual word) (sibling)
