ap·pa·ra·tus /ˌæpəˈrætəs/ noun plural apparatus·es or apparatus
a tool or piece of equipment used for specific activities [count
] ▪ She fell off a gymnastics apparatus and broke her leg. ▪ an electrical apparatus
] ▪ an expensive piece of apparatus [=machinery]
the organization or system used for doing or operating something — usually singular ▪ The country lacks a strong state/government apparatus. [=a strong government] ▪ The party apparatus [=machinery] supported his ideas.