A woman religious WordNet 3.0 & Open English WordNet

A nun is a woman who vows to dedicate her life to religious service and contemplation, typically living under vows of poverty, chastity, and obedience in the enclosure of a monastery or convent. The term is often used interchangeably with religious sisters who do take simple vows but live an active vocation of prayer and charitable work. Wikipedia

Member of a religious community of women. Wikipedia Disambiguation

A woman who has at least one child. OmegaWiki

A female ascetic who chooses to live her life in prayer and contemplation in a monastery or convent. OmegaWiki

A member of a Christian religious community of women who live by certain vows and usually wear a habit, (Roman Catholicism, specifically) those living together in a cloister. Wiktionary

Member of a Christian religious community of women. Wiktionary (translation)

Member of a non-Christian religious community of women. Wiktionary (translation)