There are 2 main definitions of cosh in English:

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cosh 1

Line breaks: cosh
British informal


A thick, heavy stick or bar used as a weapon: the defendants deny having a self-loading pistol and a telescopic cosh
More example sentences
  • It houses thousands of weapons, including guns and ammunition, knives, knuckledusters, coshes, crossbows and swords.
  • Some were armed with bottles and others brandished weapons including coshes or iron bars, a screwdriver and a knife.
  • When the lockers were later searched coshes, knives, bayonets, and swords were found.


[with object] Back to top  
Hit (someone) on the head with a cosh: the other coshed him and he fell unconscious
More example sentences
  • Fourteen years after this was made, the idea of robberies from trains, and indeed coshing drivers - coolly omitted from the professor's sophistical account of what harm his thieves have really done - lost a smidgen of its innocence.
  • The columnist coshed me on the back of the head and, while I was out, dumped me in the uncharted territory of his foreign policy mistakes.
  • Each member brought a particular skill to the gang, which successfully robbed the night mail train to London, causing serious head injuries when they coshed the train driver, who never fully recovered.


under the cosh
British informal Under pressure; in a difficult situation: car dealers are under the cosh right now
More example sentences
  • Shell-shocked Derby spent the remainder of the first-half under the cosh.
  • They are not the only public sector workers who are under the cosh.
  • The psychological effect on farmers, already economically under the cosh, was frightening.


Mid 19th century: of unknown origin.

Words that rhyme with cosh

awash, Bosch, bosh, brioche, cloche, cohosh, dosh, Foch, galosh, gosh, josh, mosh, nosh, posh, quash, slosh, splosh, squash, swash, tosh, wash
Definition of cosh in:
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There are 2 main definitions of cosh in English:

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cosh 2 Line breaks: cosh
Pronunciation: /kɒʃ/


Hyperbolic cosine.


From cos2 + -h for hyperbolic. Compare with coth.

Definition of cosh in:
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