Cosh Definition
 kŏsh 
  coshes
  
    noun
  
 
    coshes
  
A blackjack, bludgeon, or similar weapon.
 Webster's New World 
    verb
  
 
    coshes
  
To attack or hit with or as if with this weapon.
 American Heritage 
To strike with a cosh.
 Webster's New World 
    abbreviation
  
 Hyperbolic cosine.
 American Heritage 
    symbol
  
 (trigonometry) The symbol of the hyperbolic function hyperbolic cosine.
 Wiktionary 
Other Word Forms of Cosh
Noun
Singular:
 coshPlural:
 coshesOrigin of Cosh
Perhaps from Romani kosh stick
From American Heritage Dictionary of the English Language, 5th Edition
-  
Probably from Romani košter (stick)
From Wiktionary
 
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