Nun

n. female member of a religious order (especially Catholic)

A nun is a woman who has taken special vows committing her to a religious life. She may be an ascetic who chooses to voluntarily leave mainstream society and live her life in prayer and contemplation in a monastery or convent. The term "nun" is applicable to Roman Catholics, Eastern Christians, Anglicans, Jains, Lutherans, Buddhists, and Taoist, for example. The male equivalent of a nun is a monk.
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Noun
1. a woman religious
(hypernym) religious
(hyponym) Sister
2. a buoy resembling a cone
(synonym) conical buoy, nun buoy
(hypernym) buoy
3. the 14th letter of the Hebrew alphabet
(hypernym) letter, letter of the alphabet, alphabetic character
(member-holonym) Hebrew alphabet, Hebraic alphabet, Hebrew script

adv. now, at this moment, at this time, in these days

n. nude