(kar′ə1) v. ·oled or ·olled, ·ol·ing or ·ol·ing v.t.
1. To utter in song, as a bird; sing.
2. To celebrate or praise in song.
—v.i.
3. To sing in a cheerful or joyous strain; warble.
4. To sing.
—noun
1. A song of joy or praise; especially, a Christmas song.
2. The warbling of birds.
3. Obs. A dance performed in a circle; also, the song accompanying it. See synonyms under SING. [<OF carole, prob. <L choraules a flutist <Gk. choraulēs <choros a dance + aulein play the flute <aulos a flute]
—car′o·ler, car′ol·ler noun

(kar′əl)
A masculine or feminine personal name. [<Med. L Carolus]
—Carol II,
1893–1953, king of Rumania 1930–40; abdicated.