Merriam-Webster's Collegiate® Dictionary, 11th Edition
ENGINE
I. noun see: kin
Date: 13th century
1. obsolete ingenuity , evil contrivance ; wile ,
2. something used to effect a purpose ; agent , instrument , something that produces a particular and usually desirable result ,
3. a mechanical tool: as, an instrument or machine of war, a torture implement, machinery , any of various mechanical appliances, a machine for converting any of various forms of energy into mechanical force and motion, a railroad locomotive, computer software that performs a fundamental function especially of a larger program, engineless adjective
II. transitive verb (engined; engining)
Date: 1868
to equip with engines