glory hole

 

noun

  • 1 informal an untidy room or cupboard used for storage.
  • 2North American an open quarry.
  • 3a small furnace used to keep glass malleable so that it can be worked.
  • 4US informal a hole in a wall through which fellatio or masturbation is conducted incognito between male homosexuals.

Origin:

early 19th century: of unknown origin