Originally Posted by CDSmith

Main Entry: 2carol
Function: verb
Inflected Form(s): car·oled or car·olled; car·ol·ing or car·ol·ling
Date: 14th century
intransitive verb
1: to sing especially in a joyful manner
2: to sing carols; specifically : to go about outdoors in a group singing Christmas carols
transitive verb
1: to praise in or as if in song
2: to sing especially in a cheerful manner : warble
? car·ol·er or car·ol·ler \-ə-lər\ noun