Puff is the colloquial, often derogatory term for a bordello, a salon, or an establishment where sex work is offered. The term originates from the Rotwelsch "puffen" (= to work noisily) or the Low German "Puff" (= thrust).
In professional industry discourse (authorities, sex workers, counseling centers), "Puff" is avoided — instead, the terms salon (smaller operation with independent sex workers), establishment (medium-sized operation with a license), or bordello (classic term in legal and police jargon) are used.
In tabloid media, "Puff" has a fixed place in headlines — usually in the context of scandals, noise disputes, or police raids.