A woman using castanets.
castanets definition by Webster's New World
a pair of small, hollowed pieces of hard wood, ivory, etc., held in the hand by a connecting cord and clicked together with the fingers to beat time to music, esp. in Spanish dances
Origin: French castagnette (sing.) ; from Spanish castañeta, diminutive of castaña ; from Classical Latin castanea, chestnut: so named from the shape