drunk tank
Synonym discussion
Sense: noun/1
All four terms describe temporary holding places at a police station, but they differ in specificity and register. 'Drunk tank' is the most specific — it refers exclusively to a cell for intoxicated people and carries an informal, slightly humorous tone. 'Holding cell' is a neutral, general term for any short-term detention room where suspects wait before being processed. 'Lockup' is also informal but generic — it can mean any small jail cell, especially one at a local police station. 'Detention cell' is the most formal and neutral, used in official or legal writing. For example, a police report might say 'the suspect was placed in a detention cell,' while friends joking about a wild night might say 'they threw him in the drunk tank.'
Etymology
The compound 'drunk tank' joins the adjective 'drunk' (meaning intoxicated, from Old English 'druncen', the past participle of 'drincan' — to drink) with 'tank' (here meaning an enclosure or holding cell, from Portuguese 'tanque' via Indian languages, originally a reservoir or container, later extended in American English to mean a prison cell). The term first appeared in early 20th-century American police jargon to describe a specific holding cell for people arrested on public intoxication charges.
First known use
1947
1947, in the meaning defined above