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Definitions

spark plug

NOUN
device that ignites fuel in engine
Synonyms


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 spark plug ignites a fuel-air mix, causing the rotor to turn a shaft, creating motion.

From The Wall Street Journal • Apr. 24, 2026

The spark plug ignites a fuel-air mix, causing the rotor to turn a shaft, creating motion.

From The Wall Street Journal • Apr. 24, 2026

That caused a short-circuit and "arcing" - electric sparks like those in a spark plug - which resulted in a "catastrophic failure".

From BBC • Jul. 2, 2025

With star freshman JuJu Watkins fouling out at the end of regulation, Williams, a 5-foot-7 defensive spark plug who is working back from offseason surgery, played a season-high 26 minutes.

From Los Angeles Times • Mar. 6, 2024

My father bought a new spark plug for the mower.

From "Crash" by Jerry Spinelli




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