sweatbox

1. Any box or boxlike structure used to induce sweating, such as of hides or tobacco

2. (US, slang)A jail cell.

   small or narrow cell

3. (UK, slang)A compartment in a police van to hold a prisoner being transported.

4. A small overheated cell or room used for solitary confinement or torture.

5. (slang)A small nightclub packed to capacity where people get hot and sweaty.

6. The room where a scene is reviewed.

7. The review process that takes place in a sweat box.

regular