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Word of the Day Wednesday, June 10, 2026

sparkplug

/ˈspɑːrkplʌɡ/ noun · British & US
Valid in UKValid in US
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What does sparkplug mean?

noun

A device that generates a spark to ignite the fuel in an internal combustion engine, typically consisting of a metal shell with a ceramic insulator and a metal electrode. A person or thing that provides energy or enthusiasm.

Example

"The mechanic replaced the sparkplug to fix the car's engine."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for sparkplug

Antonyms of sparkplug

Rhymes with sparkplug

Etymologically related