proof mark

noun

A mark stamped on a gun to show that it has been tested successfully.

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Meanings

nounproof mark (plural proof marks)

plural proof marks

  1. engineeringA mark stamped on a gun to show that it has been tested successfully.
Cite this entry
APA

proof mark. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/proof%20mark

MLA

“proof mark.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/proof%20mark. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “proof mark,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/proof%20mark.

Source: proof mark on Wiktionary, CC BY-SA 4.0.