any engine that makes use of heat to do work

a metal casting containing the cylinders and cooling ducts of an engine

mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings

a boat propelled by an internal-combustion engine

a self-propelled wheeled vehicle that does not run on rails

a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines

an internal-combustion engine that burns heavy oil

an internal-combustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke; work is done on the third stroke and the products of combustion are exhausted on the fourth stroke

an internal-combustion engine similar to a gasoline engine but using natural gas instead of gasoline vapor

an internal-combustion engine that burns gasoline; most automobiles are driven by gasoline engines

internal-combustion engine that mounts at stern of small boat

a metal casting containing the cylinders and cooling ducts of an engine

mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings

a boat propelled by an internal-combustion engine

a self-propelled wheeled vehicle that does not run on rails

a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines