poteen , n :
(Ireland, countable, uncountable) Illegally produced Irish whiskey; moonshine. (Ireland, countable, by extension) An unlicensed drinking establishment selling illegally produced Irish whiskey. Today is Saint Patrick’s Day, the feast day of the patron saint of Ireland.
Source http://handbookblogger.blogspot.com/2018/03/poteen-word-of-day-for-march-17-2018.html
