[kosh]Chiefly British Slang.
- a blackjack; bludgeon.
- to hit on the head with a cosh.
Origin of cosh1
1865–70; perhaps < Romany kosh, koshter stick
- hyperbolic cosine.
Origin of cosh2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cosh
In his left pocket there was a cosh and in his right a revolver.Tartarin de Tarascon
Copeland, Cosh, and M'Nair, along with their respective wives.The Story of John G. Paton
Cosh, a neddy, a life-preserver; any short, loaded bludgeon.The Slang Dictionary
John Camden Hotten
Coshery, kosh′ėr-i, n. the ancient right of an Irish chief to quarter himself and his retainers on his tenantry—also Cosh′ering.
The cosh was a foot length of iron rod, with a knob at one end, and a hook (or a ring) at the other.A Child of the Jago
- a blunt weapon, often made of hard rubber; bludgeon
- an attack with such a weapon
- to hit with such a weapon, esp on the head
C19: from Romany kosh, from koshter skewer, stick
- hyperbolic cosine; a hyperbolic function, cosh z = 1/2 (e z + e –z), related to cosine by the expression cosh i z = cos z, where i = √–1
C19: from cos (ine) + h (yperbolic)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for cosh
"stout stick," 1869, of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
- Abbreviation of hyperbolic cosine
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