spark plug
noun
a device designed to fit in each cylinder of a gasoline-powered internal-combustion engine and to produce the electric spark for igniting the mixture of gasoline and air.
spark plugs
-
pluralof spark plug.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The maker of spark plugs and other auto parts collapsed with around $10 billion in debt in September.
From Barron's ● Oct. 13, 2025
A SpaceX engineer likened this critical system to spark plugs for a car.
From Washington Times ● Feb. 27, 2023
The Ford engine ran until its spark plugs gave out a few years ago, and a newly installed fuel cell—quieter and more efficient—has not yet been hooked into the village grid.
From Science Magazine ● Feb. 15, 2023
Most striking is a set of spark plugs, one fully painted and other merely sketched.
From Washington Post ● Sep. 16, 2022
Travis’s father perspired in the gravel driveway, changing out the spark plugs on his pickup that had the name of the family business, Bohannon Lumber; stenciled on the side.
From "The Serpent King" by Jeff Zentner
