noun
Standard automotive term for the ignition component in an internal combustion engine.
エンジンの調子が悪いので、スパークプラグを交換した。
The engine was running rough, so I replaced the spark plugs.
Variant with interpunct; less common in everyday writing.
Synonymous Japanese-English hybrid term; スパークプラグ is the more common loanword.
Loanword from English 'spark plug'.