Dictionary.com

cosh

1
[ kosh ]
/ kɒʃ /
Chiefly British Slang.
Save This Word!
See synonyms for: cosh / coshed / coshing on Thesaurus.com

noun

verb (used with object)

to hit on the head with a cosh.

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of cosh

1
First recorded in 1865–70; of uncertain origin; perhaps from Romani kosh, koshter “piece of wood,stick,” akin to Sanskrit kāṣṭham

Definition for cosh (2 of 2)

cosh2
[ kosh ]
/ kɒʃ /

noun Mathematics.

hyperbolic cosine.

Origin of cosh

2
First recorded in 1870–75; cos(ine) + h(yperbolic)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for cosh

British Dictionary definitions for cosh (1 of 2)

cosh1
/ (kɒʃ) British /

noun

a blunt weapon, often made of hard rubber; bludgeon
an attack with such a weapon

verb (tr)

to hit with such a weapon, esp on the head

Word Origin for cosh

C19: from Romany kosh, from koshter skewer, stick

British Dictionary definitions for cosh (2 of 2)

cosh2
/ (kɒʃ, ˈkɒsˈeɪtʃ) /

noun

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

Word Origin for cosh

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

Scientific definitions for cosh

cosh

Abbreviation of hyperbolic cosine
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Tired of Typos? Get Help Now!