hop joint

plural hop joints

1. slangAn establishment where opium is smoked.

   There's quite a trade in laudanum since the police started shaking down the hop-joints so much.

   1915, George Bronson-Howard, God's Man, page 39

   1 more example

   Another female inmate of her abode told her its use would bring luck, so she spent a day in a "hop joint" smoking opium until night came.

   1897, John Sanderson Christison, Crime and Criminals, page 58