noun, plural cha-chas.
- a fast ballroom dance of Latin American origin, similar to the mambo, that follows a rhythmic pattern based upon a quick three-step movement.
verb (used without object), cha-chaed, cha-cha·ing.
- to dance the cha-cha.
also cha-cha-cha, type of Latin-American 3-beat ballroom dance, 1954, echoic of the music.