knock into a cocked hat

Slang Dictionary

knock (sth) into a cocked hat definition


  1. tv.
    to demolish a plan, a story, etc. : You've knocked everything into a cocked hat.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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American Heritage
Idioms & Phrases

knock into a cocked hat

Debunk, render useless or unbelievable. For example, His findings knocked our theory into a cocked hat. This expression alludes to a style of hat with the brim turned up on three sidesthe three-cornered (tricorne) hat worn by officers in the American Revolutiongiving it a distorted look. [Early 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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