carol

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A song of praise or joy, especially for Christmas.
2. n. An old round dance often accompanied by singing.
3. v. To sing in a loud, joyous manner.
4. v. To go from house to house singing Christmas songs.
5. v. To celebrate in or as if in song: caroling the victory.
6. v. To sing loudly and joyously.

Century Dictionary and Cyclopedia

1. n. A kind of circular dance.
2. n. [It is often difficult to tell from the context whether carol is the dance or the song that seems to have been sung as an accompaniment to it; but in Chaucer it usually means simply the dance.]
3. n. A song, especially one expressive of joy; often, specifically, a joyous song or ballad in celebration of Christmas.
4. To sing; warble; sing in joy or festivity.
5. To sing joyously.
6. To praise or celebrate in song.
7. n. A ring of leaves or flowers; a garland; a wreath.
8. n. In architecture: A small closet or inclosure in which to sit and read. A bay-window.
9. n. Also written carrel, carrell, carrall.

Wiktionary

1. n. A round dance accompanied by singing.
2. n. A song of joy.
3. n. A religious song or ballad of joy.
4. v. intransitive To sing in a joyful manner.
5. v. intransitive To sing carols, especially Christmas carols in a group.
6. v. transitive To praise (someone or something) in or with a song.
7. v. transitive To sing (a song) cheerfully.

GNU Webster's 1913

1. n. obsolete A round dance.
2. n. A song of joy, exultation, or mirth; a lay.
3. n. A song of praise of devotion.
4. n. Joyful music, as of a song.
5. v. To praise or celebrate in song.
6. v. To sing, especially with joyful notes.
7. v. To sing; esp. to sing joyfully; to warble.
8. n. (Arch.) A small closet or inclosure built against a window on the inner side, to sit in for study. The word was used as late as the 16th century. The term carrel, of the same has largely superseded its use.

WordNet 3.0

1. n. a joyful song (usually celebrating the birth of Christ)
2. v. sing carols
3. n. joyful religious song celebrating the birth of Christ