Thronie UK /ˈθɹəʊ.ni/US /ˈθɹoʊ.ni/ noun1 •(slang) A fan of the American fantasy drama television series Game of Thrones. or the novel series A Song of Ice and Fire it is based on.It takes a special breed of fan to get up early for a 12-hour Game of Thrones marathon, but it takes a true "Thronie" to do it the morning after a midnight screening of The Hunger Games. — 2012 formsThronies