The impetus behind all motion and all activity. / The capacity to do work.

The terminal point of something in space or time. / (by extension) The cessation of an effort, activity, state, or motion. / (by extension) Death.

(intransitive, ergative) to come to an end / (transitive) To finish, terminate.

The act of enlisting. / Voluntary service based on an individual's desire to serve a cause.

The English language spoken since the Great Vowel Shift, completed in roughly 1550.

problems occurring with an engine or motor, especially with that of a motor car

(Britain, dated) The person who drives the engine of a train.

An engine that obtains thrust by taking in air at the front, using it to burn fuel, then ejecting the hot combustion products at the rear through a propulsive nozzle.

A piston engine driven by steam (as contrasted, for example, with a steam turbine). / Any heat engine that uses steam as its primary working fluid to do mechanical work. / (Britain) A steam locomotive.

(firefighting) A vehicle used by firefighters to pump water to fight a fire. Typically, a fire engine carries a supply of water and has the ability to connect to an external water supply.