Engine
Definition 1 of 4
Pro Tip 1/3
Physical Object
Engine refers to a tangible, mechanical item; generally substantial and complex. The mechanic fixed the engine.
Pro Tip 2/3
Source of Power
The word engine suggests being a primary source of power in devices like cars or lawnmowers. The engineer is designing a new engine.
Pro Tip 3/3
Associated Sounds
Engines are often associated with noise; different types have distinct sounds. The engine roared to life.