potheen

/P AA1 T HH IY0 N/
noun
  1. 1

    Illegally produced Irish whiskey; moonshine.

  2. 2

    (by extension) An unlicensed drinking establishment selling illegally produced Irish whiskey.

Source: https://en.wiktionary.org/wiki/poteen, https://en.wiktionary.org/wiki/potheen