a type of heavy fuel used in special designed engines (diesel engines) in buses, trains, lorries etc

engine

any kind of machine that changes energy (from petrol, electricity etc) into motion

device that drives a machine

of, concerning, vehicles; a machine which produces or uses power (especially electrical power) to produce motion

engine

(in an engine) a round, short piece of metal fitting closely inside a tube in which it moves to cause motion

engine

an apparatus that increases or decreases the voltage or current of an electric power supply

engine

an engine or motor whose driving-wheel is turned by a current of water or gas

turbine