carbon pencil

noun

Definition of carbon pencil

: a small stick of carbon or charcoal containing a small amount of niter that on being lighted is used for cracking glass

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Learn More About carbon pencil

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Cite this Entry

“Carbon pencil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbon%20pencil. Accessed 6 Dec. 2021.

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