Sweatbox

Origin

sweat + box

Full definition of sweatbox

Noun

1. Any box or boxlike structure used to induce sweating, such as of hides or tobacco
• 2009, January 31, Karen Collier, Posties buckle in scorching heat, Australia Post has been accused of endangering staff with "sweatbox" uniforms and restricting earlier starts to save money.
2. (US, slang) A prison cell
3. (slang) A small nightclub packed to capacity where people get hot and sweaty.