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Related to coldcock: cold-hearted
To strike someone, knocking them down and, possibly, rendering them unconscious. The burglar would have escaped too, had a passerby not coldcocked him. Everyone was stunned when that scrawny nerd coldcocked the bully.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
to knock someone unconscious. He hit him once and looks like he coldcocked him. She cold-cocked him with her walking stick.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
tv. to knock someone out. The clerk coldcocked the would-be robber with a champagne bottle.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.