moteur

noun
  1. A device that converts energy into mechanical motion, typically used to power machines, vehicles, or appliances. noun
    The car's moteur was recently serviced to improve performance.
    An electric moteur drives the conveyor belt in the factory.
  2. In a broader sense, a source or cause that initiates or sustains a process or activity. noun
    Her passion for innovation was the moteur behind the company's success.
    The moteur of the project was his relentless dedication and creativity.