nun

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A woman who belongs to a religious order or congregation devoted to active service or meditation, living under vows of poverty, chastity, and obedience.
2. n. The 14th letter of the Hebrew alphabet. See Table at alphabet.

Century Dictionary and Cyclopedia

1. n. A woman devoted to a religious life, under a vow of poverty, celibacy, and obedience to a superior: correlative to monk.
2. n. A female recluse.
3. n. A name of several different birds. The smew, Mergellus albellus, more fully called white nun.
4. n. A child's top.
5. To cloister up as a nun; confine in or as if in a nunnery.
6. n. Same as nun-moth.
7. n. A yellowish-brown, neutral, fatty substance produced by an insect found in Yucatan. It melts at 48.9° C. and readily absorbs oxygen from the air.
8. n. The fourteenth letter (ℶ) of the Hebrew alphabet, corresponding to the Greek νῦ and the English n. Its numerical value is 50.

Wiktionary

1. n. The fourteenth letter of many Semitic alphabets/abjads (Phoenician, Aramaic, Hebrew, Syriac, Arabic and others).
2. n. A member of a Christian religious community of women who live by certain vows and usually wear a habit, in some cases living together in a cloister.
3. n. By extension, member of a similar female community in other confessions.

GNU Webster's 1913

1. n. A woman devoted to a religious life, who lives in a convent, under the three vows of poverty, chastity, and obedience.
2. n. A white variety of domestic pigeons having a veil of feathers covering the head.
3. n. The smew.
4. n. The European blue titmouse.
5. n. The 14th letter of the Hebrew alphabet, corresponding in pronunciation to n.
6. n. The 25th letter of the Arabic alphabet, corresponding in pronunciation to n.

WordNet 3.0

1. n. a buoy resembling a cone
2. n. the 14th letter of the Hebrew alphabet
3. n. a woman religious