noun see: chestnut Date: circa 1647 a percussion instrument used especially by dancers that consists of two small shells of hard wood, ivory, or plastic usually fastened to the thumb and clicked together by the other fingers
CASTANET
Meaning of CASTANET in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012