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

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

First Known Use of smoking gun

1974


SMOKING GUN Defined for English Language Learners

smoking gun

noun

Definition of smoking gun for English Language Learners

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


Learn More about smoking gun


Seen and Heard

What made you want to look up smoking gun? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

marked by intense feeling

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!