1. A hole in a barrel or cask; used to fill or empty it
   "The brewer poured the beer into the barrel through the bunghole"
    
2. [vulgar, informal] Vulgar slang for anus
   "He used the crude term 'bunghole' instead of the proper anatomical name";

Derived forms: bungholes

Type of: anus, hole

Encyclopedia: Bunghole