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
Cornel had changed the oil and put in new spark plugs, a new battery and a new timing belt.
From Washington Post ● Jul. 22, 2021
The line, fitted with a hook, has three spark plugs at the end to sink it.
From "Enrique's Journey" by Sonia Nazario
