a wind-instrument of music, made of hard wood, and blown by a mouth-piece. Some flageolets are very small, and have a shrill piercing sound. Flageolets are of different sizes, and tuned to different keys, e.g., C, D, E flat, F, and G. There are also double-flageolets, capable of playing two parts, in which two flageolets are joined together, and sounded by the same mouth-piece.