Seanad Éireann (??æn?ð ?e?r?n) n (Government, Politics & Diplomacy) (in the Republic of Ireland) the upper chamber of parliament; the Senate[from Irish, literally: senate of Ireland]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014