Bunghole

ahd-5
  • noun. The hole in a cask, keg, or barrel through which liquid is poured in or drained out.
  • noun. The anus.
  • The Century Dictionary and Cyclopedia
  • noun. A hole or orifice in a cask through which it is filled, closed by a bung.
  • the GNU version of the Collaborative International Dictionary of English
  • noun. See bung, n., 2.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. Alternative spelling of bung-hole.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. vulgar slang for anus
  • noun. a hole in a barrel or cask; used to fill or empty it