Main Entry: 1en·gine
Pronunciation: \ˈen-jən\
Function: noun
Etymology: Middle English engin, from Anglo-French, from Latin ingenium natural disposition, talent, from in- + gignere to beget — more at kin
Date: 13th century
1 obsolete a : ingenuity b : evil contrivance : wile
2 a : something used to effect a purpose : agent, instrument <mournful and terrible engine of horror and of crime — E. A. Poe> b : something that produces a particular and usually desirable result <engines of economic growth>
3 a : a mechanical tool: as (1) : an instrument or machine of war (2) obsolete : a torture implement b : machinery c : any of various mechanical appliances —often used in combination <fire engine>
4 : a machine for converting any of various forms of energy into mechanical force and motion; also : a mechanism or object that serves as an energy source <black holes may be the engines for quasars>
5 : a railroad locomotive
6 : computer software that performs a fundamental function especially of a larger program

— en·gine·less adjective

Main Entry: 1mo·tor
Pronunciation: \ˈmō-tər\
Function: noun
Etymology: Latin, from movēre to move
Date: 1586
1 : one that imparts motion; specifically : prime mover
2 : any of various power units that develop energy or impart motion: as a : a small compact engine b : internal combustion engine; especially : a gasoline engine c : a rotating machine that transforms electrical energy into mechanical energy
3 : motor vehicle; especially : automobile

— mo·tor·dom \-dəm\ noun

— mo·tor·less \-ləs\ adjective