Definition of gas cap in English:

gas cap

Syllabification: gas cap

noun

North American
  • A cap that closes the pipe leading to the gas tank of a motor vehicle: my gas cap wasn’t on tight enough
    More example sentences
    • We've all seen that person who drives around with their gas cap open.
    • He removed the gas cap from the truck and pulled the nozzle from the pump.
    • Not one to waste time, I unscrewed the gas cap and slipped the siphon tube into the tank.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody