noun[ C ]uk/ˌtʃɑː.tʃɑːˈtʃɑː/us/ˌtʃɑː.tʃɑːˈtʃɑː/(also cha-cha, uk/ˈtʃɑː.tʃɑː//ˈtʃɑː.tʃɑː/)
恰恰舞（曲）
an energetic modern dance, originally from South America, involving small fast steps and movement of the bottom from side to side, or a piece of music written for this dance