a musical instrument that is played to provide a strong beat to a piece of music

He uses his guitar as a supporting rhythm instrument. 他用吉他作为辅助节奏乐器。

Members of the choir danced in the aisles with tambourines and other rhythm instruments. 合唱团成员演奏着手鼓和其他节奏乐器在教堂侧廊翩翩起舞。