(noun, verb)


1. motor that converts thermal energy to mechanical work

Definition categories: man–made, motor

2. something used to achieve a purpose

- an engine of change

Definition categories: phenomenon, cause

3. a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks

Similar word(s): locomotive

Definition categories: man–made

4. an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc.

- medieval engines of war

Definition categories: man–made, instrument

Sentences with engine as a noun:

- a graphics engine; a physics engine


1. (obsolete) To assault with an engine.

2. (dated) To equip with an engine; said especially of steam vessels.

- Vessels are often built by one firm and engined by another.

3. (obsolete) To rack; to torture.