Definition & Meaning of "castanets"

What are "castanets"?

Castanets are small percussion instruments made of wood, plastic, or metal, shaped like a pair of hinged, oval or crescent-shaped clappers. They are held in the hand and produce sound by rapidly closing the clappers together. The player creates rhythm by clicking the castanets with their fingers or thumb. They are commonly used in Spanish and Latin American music, especially in flamenco dancing, to add sharp, rhythmic accents and enhance the performance's dynamic and lively character.