self-starter

• POS: Noun
• HYPHEN: self-start=er

CIDE DICTIONARY

self-starter, n. 

 A mechanism (usually one operated by electricity, compressed air, a spring, or an explosive gas), attached to an internal-combustion engine, as on an automobile, and used as a means of starting the engine without cranking it by hand; -- called also a starter.  [Webster 1913 Suppl.]

OXFORD DICTIONARY

self-starter, n.
1 an electric appliance for starting a motor vehicle engine without the use of a crank.
2 an ambitious person who needs no external motivation.