1. [mid-19C–1950s] any small, hot room, or place.
2. [mid-19C+] (orig. US) an oppressively small cell; a punishment cell.
3. [late 19C+] a room, usu. in a police station, in which prisoners undergo interrogation; also attrib.
4. [late 19C] (US) the upper gallery of a theatre.
5. [late 19C+] a cell for prisoners waiting to appear in a magistrate’s court.
6. the equivalent of an SE sweat shop.
7. [1950s] (US) one who is sweating heavily.
8. [1970s] (US black) a crowded party.
9. [1970s+] a prison van, used to transport prisoners from court to prison etc.