What does cosh mean?
A cosh is a short, heavy, hand-held weapon designed to stun or knock a victim unconscious with a single blow to the head. Usually weighted with metal or lead and sometimes sheathed in leather or rubber for grip, it differs from an ordinary club in being deliberately compact and concealable. The word is chiefly British, entering everyday usage through crime reporting and noir fiction of the early twentieth century, and it carries unmistakably violent, criminal associations — few words summon the shadowy world of backstreet robbery so efficiently. It also functions as a verb: to cosh someone is to strike them with such a weapon, a usage common in newspaper accounts of muggings and gang attacks. In the United States, comparable implements are more often described as saps or blackjacks, making cosh a distinctly transatlantic marker of vocabulary as much as of subject matter.
A short, heavy club or weighted weapon, typically leather- or rubber-sheathed, used to strike a person on the head and render them unconscious.
"The mugger pulled a cosh from his coat pocket."
Chiefly British slang; strongly associated with criminal violence.
To attack or assault someone using a cosh.
"Two men were jailed for coshing a taxi driver during a fare dispute."
Used transitively; appears mostly in journalistic and legal contexts.
Standard plural; used when referring to multiple weapons, e.g. in police seizures.
"Officers recovered several coshes from the premises."
The cosh entered English from the language of the Roma — 'kosht' simply means 'stick' in Romani.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cosh
The word cosh derives from Romani, the language of the Roma people, in which 'kosht' means a stick or piece of wood. It was absorbed into English slang in the nineteenth century via communities where Romani speakers and urban criminals interacted, and by the late Victorian and Edwardian eras it had become firmly established in police court reporting. Its journey from an ordinary word for wood in Romani to a byword for street violence gives it an unusually colourful linguistic history.
Related word forms
How cosh is actually used
Predominantly British slang, though understood in American crime fiction and journalism, where similar weapons are called saps or blackjacks. Strongly criminal connotation — it appears almost exclusively in reports of assaults, robbery, and gangland violence rather than in ordinary conversation.