/chah"chah'/ , n. , pl. cha-chas , v. , cha-chaed, cha-chaing .
n.
1. a fast ballroom dance of Latin American origin, similar to the mambo, that follows a rhythmic pattern based upon a quick three-step movement.
v.i.
2. to dance the cha-cha.
Also, cha-cha-cha .
[ 1950-55; cha-cha-cha, prob. imit. of the musical accompaniment ]