spark plug

noun [C]

Definition

› a part in an engine that makes the fuel burn

(Definition of spark plug noun from the Cambridge Learner's Dictionary © Cambridge University Press)

Our dictionaries

Browse the Thesaurus

“spark plug” in other dictionaries

Browse the Dictionary

Word of the Day

jettison

to get rid of something or someone that is not wanted or needed

Word of the Day ►

Blog

Read our blog about how the English language behaves.

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.