spark plug

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Noun

spark plug (plural spark plugs)

1. The part of an internal combustion engine which forms a high-voltage electric spark which ignites the fuel-air mixture to begin the power stroke.
2. (figuratively) Someone who is a driving force in new endeavours.

   Synonyms: straw that stirs the drink, catalyst, instigator, mover and shaker, stimulus

Translations

• French: bougie d'allumage, bougie
• German: Zündkerze
• Italian: candela di accensione
• Portuguese: vela de ignição
• Russian: свеча́ зажига́ния
• Spanish: bujía

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