spark plug


: a part of an engine that produces a spark that makes the fuel burn

Full Definition of SPARK PLUG

:  a part that fits into the cylinder head of an internal combustion engine and carries two electrodes separated by an air gap across which the current from the ignition system discharges to form the spark for combustion
:  one that initiates or gives impetus to an undertaking
spark·plug \ˈspärk-ˌpləg\ transitive verb

First Known Use of SPARK PLUG

SPARK PLUG Defined for Kids

spark plug


Definition of SPARK PLUG for Kids

:  a device used in an engine to produce a spark that ignites a fuel mixture


Next Word in the Dictionary: sparkproofPrevious Word in the Dictionary: spark photographyAll Words Near: spark plug
July 29, 2015
indomitable Hear it
incapable of being subdued or conquered
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears