a knocking shop

(British very informal) also a knock-shop (Australian very informal)

a place where men pay to have sex with women People say it's a knocking shop but I've never seen anything going on.

Name	Pronounced	Usage
Mallory	MAL-ə-ree	English (Modern)
Mariam	-	Biblical Greek, Georgian, Armenian, Arabic
Itxaso	-	Basque
Alinafe	ah-lee-NAH-fay	Southern African, Chewa
Mclain	[mək'lein]
Willi	VI-lee	German