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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 wind-down of those businesses, including aftermarket parts maker Cardone and spark plug manufacturer Autolite, comes in addition to the layoffs announced Monday.

From The Wall Street Journal • Feb. 23, 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

Both players serve important roles in the lineup, Freeman as a run-producer behind Ohtani and Mookie Betts, Rojas as a bottom-of-the-lineup spark plug who was batting almost .300 until a few weeks ago.

From Los Angeles Times • Sep. 30, 2024

Edwin reached in his jacket pocket and pulled out a spark plug.

From "Touching Spirit Bear" by Ben Mikaelsen




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