Carol \Car"ol\, v. t. [imp. & p. p. {Caroled}, or {Carolled}; p. pr. & vb. n. {Caroling}, or {Carolling}.] 1. To praise or celebrate in song. The Shepherds at their festivals Carol her goodness. --Milton. 2. To sing, especially with joyful notes. Hovering swans . . . carol sounds harmonious. --Prior.