AOH
abbreviation for (Government, Politics & Diplomacy) Ancient Order of Hibernians: an Irish Catholic nationalist association founded in the 19th century; an important political force up to the founding of the Irish Free State (1922)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014