- a female ascetic who chooses to voluntarily leave the world and live her life in prayer and contemplation in a monastery or convent;
- in the Bible, Nun is the name of the father of Joshua, the right-hand man and successor of Moses.
- in Egyptian mythology, an alternate spelling for Nu, the name by which ancient Egyptians called both the mysterious underworld from where life was renewed and the primordeal god residing there (the name translates as "Abyss");
- in biology, a genus of the hillstream loach, a type of small freshwater fish;
- in Elizabethan era slang, a prostitute(a nunnery referred to a brothel as well as a genuine nunnery);
- the fourteenth letter of many Semitic alphabets;
- nun buoy, a type of buoy.
Picture of hillstream loach
In general, a nun is a female 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 and Buddhists,for example. The male equivalent of a nun is a monk.