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patent hammer

American  

noun

  1. a hammer for dressing stone, having a head with two faces formed of a number of broad, thin chisels bolted side by side.

Etymology

Origin of patent hammer

First recorded in 1895–1900

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.