Tynwald (?t?nw?ld; ?ta?n-) n (Government, Politics & Diplomacy) the Tynwald the Parliament of the Isle of Man, consisting of the crown, lieutenant governor, House of Keys, and legislative council. Full name: the Tynwald Court [C15: from Old Norse thingvollr, from thing assembly + vollr field]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Tyn?wald (?t?n w?ld) n. the legislature of the Isle of Man. [