silent partner
noun [ C usually singular ] US uk/ˌsaɪ.lənt ˈpɑːt.nər/ us/ˌsaɪ.lənt ˈpɑːrt.nɚ/ (UK sleeping partner)
隐名合伙人
a partner in a company who does not take an active part in its management, especially one who provides some of the money