spark plug
noun
1
: a part that fits into the cylinder head of an internal combustion engine and carries two electrodes separated by an air gap across which the current from the ignition system discharges to form the spark for combustion
2
: one that initiates or gives impetus to an undertaking
Examples of spark plug in a Sentence
Recent Examples on the Web
Acuña has been a spark plug of sorts for the lineup but was left on the bench twice in Arizona earlier in the week.
—
Abbey Mastracco, New York Daily News, 9 May 2025
The 5-foot-10 spark plug has superb quickness, an asset in the slot, but terrible long speed judging by his 40-yard dash time pre-draft (4.71).
—Andrew Callahan, Boston Herald, 2 June 2025
The list includes tariff codes for engines, transmissions, lithium-ion batteries and other major components, along with less expensive parts including tires, shock absorbers, spark plug wires and brake hoses.
—David Lawder and Jason Lange, USA Today, 3 Apr. 2025
The Bucks’ bench spark plug turned suspension casualty is still serving a 25-game ban, leaving Milwaukee’s second unit without its emotional leader.
—Brian Sampson, Forbes.com, 26 Mar. 2025
See All Example Sentences for spark plug
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Abbey Mastracco, New York Daily News, 9 May 2025
The 5-foot-10 spark plug has superb quickness, an asset in the slot, but terrible long speed judging by his 40-yard dash time pre-draft (4.71).
—Andrew Callahan, Boston Herald, 2 June 2025
The list includes tariff codes for engines, transmissions, lithium-ion batteries and other major components, along with less expensive parts including tires, shock absorbers, spark plug wires and brake hoses.
—David Lawder and Jason Lange, USA Today, 3 Apr. 2025
The Bucks’ bench spark plug turned suspension casualty is still serving a 25-game ban, leaving Milwaukee’s second unit without its emotional leader.
—Brian Sampson, Forbes.com, 26 Mar. 2025
See All Example Sentences for spark plug
Cite this Entry
“Spark plug.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spark%20plug. Accessed 13 Jul. 2025.
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