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An old term for jail. Synonymous with: crossbar hotel, greybar hotel, jug, lock-down, etc.

"Hot joint" was made popular as a phrase by the Johnny Cash song: Cocaine Blues.
1. That negro had dope on him when he was searched. He went to the hot joint for the weekend.

2. The white-trash assholes decided to fistfight. They went to the hot joint in separate police cars.
by Rook's Buddy May 12, 2010
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