organ-grinder
/ˈɔːgənˌgraɪndə(r)/noun
1- a street musician who plays a barrel organ街头手摇风琴师。
1.1
- figurative a person in control of another〈喻〉操纵者, 主人。
- ORIGIN: with reference to the tradition of an organ-grinder's keeping a monkey trained to collect money.