pilot light

noun

1
: a small permanent flame used to ignite gas at a burner
2
: an indicator light showing where a switch or circuit breaker is located or whether a motor is in operation or power is on

called also pilot lamp

Examples of pilot light in a Sentence

Recent Examples on the Web
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Willis also recommends extinguishing all pilot lights and disabling any sources of sparks because bug bombs are highly flammable. Shivani Vyas, Better Homes & Gardens, 25 Sep. 2024 To me, those tiny altars were the pilot lights of our house. Victor Lodato, The New Yorker, 29 July 2024 Legends keep them in the soul, a pilot light for payback. Sean Keeler, The Denver Post, 14 Feb. 2024 The rarest pilot lights burn hottest when the nights bring their darkest and coldest. Sean Keeler, The Denver Post, 14 Feb. 2024 See all Example Sentences for pilot light 

Word History

First Known Use

1881, in the meaning defined at sense 1

Time Traveler
The first known use of pilot light was in 1881

Dictionary Entries Near pilot light

Cite this Entry

“Pilot light.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pilot%20light. Accessed 28 Nov. 2024.

Kids Definition

pilot light

noun
: a small permanent flame used to ignite gas at a burner

More from Merriam-Webster on pilot light

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