castanets

n [pl] pair of shell-shaped pieces of wood or ivory clicked together with the fingers, esp as a rhythmic accompaniment to a Spanish dance 响板（木头或象牙制成的一对贝壳形板, 用手指拍合作响, 尤作西班牙舞蹈的伴奏器）.

cashcard plastic, cashew, cashier, cashmere, cashpoint, casino, cask, casket, cassava, casserole, cassette, cassock, cast, cast about for, cast aside, cast back, cast iron, cast light on, cast oneself on, cast-off, castaway, caste, castellated, castigate, castigation, casting, casting vote, castle, castoff, castor (also caster), castor oil, castor sugar (also caster sugar), castrate, castration, casual, casually, casualness, casuals, casualty, casualy,