Answer:

castanets

Answer	Crossword Clue
CASTANETS	They're often played by flamenco dancers
CASTANETS	Flamenco clackers
CASTANETS	Always heard in "Carmen."

CASTANETS	Spanish dance accompaniment.
CASTANETS	Carmen clicks them.
CASTANETS	Dancer's equipment.
CASTANETS	Spanish dancer's accessories.
CASTANETS	Spanish dancer's clickers
CASTANETS	Rhythm instruments
CASTANETS	Rhythm instrument
CASTANETS	Clickers

CASTANETS	They really click
CASTANETS	Spanish dancers' accessories
CASTANETS	Dancer's clickers
CASTANETS	They might click on a dance floor