荸薺鼓

Etymology
荸薺 (water chestnut) + 鼓 (drum), so called because it looks like a water chestnut with its top and bottom cut off

Noun

 * 1) A small, shallow double-headed drum with a high pitch, played with a single stick held by the right hand, usually in conjunction with a paiban held in the left hand; formerly used in traditional musics of the Jiangnan region