smoking gun

noun

Definition of smoking gun

: something that serves as conclusive evidence or proof (as of a crime or scientific theory)

Examples of smoking gun in a Sentence

This document is the smoking gun that proves that he was lying.

Recent Examples on the Web

Burning grass, smoking gun The prairie sometimes burns naturally, as lightning strikes can spark wildfires. — Kiona N. Smith, Ars Technica, "Native Americans managed the prairie for better bison hunts," 25 July 2018 Turley blasts the media for promising for over a year bombshell, bombshell, bombshell, smoking gun. — Fox News, "Hannity: President Trump is on a tear, enacting his agenda," 4 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'smoking gun.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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More Definitions for smoking gun

smoking gun

noun

English Language Learners Definition of smoking gun

: a piece of evidence that clearly proves who did something or shows how something happened

See the full definition for smoking gun in the English Language Learners Dictionary

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