Carol \Car"ol\, Carrol \Car"rol\, n. [OF. carole a sort of circular space, or carol.] (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. A bay window may thus be called a carol. --Parker. Carrol \Car"rol\, n. (Arch.) See 4th {Carol}.