Origin of coshBritish slang from Romani, contr. from koshter, a skewer, stick
transitive verbcoshed, cosh·ing, cosh·es
Origin of coshPerhaps from Romani kosh stick
(third-person singular simple present coshes, present participle coshing, simple past and past participle coshed)
- To strike with a weapon of this kind.
Probably from Romani košter (stick)
- (trigonometry) The symbol of the hyperbolic function hyperbolic cosine.