rotary UK /ˈɹəʊ.tə.ɹi/US /ˈɹoʊ.tə.ɹi/noun 2adjective 1forms 1 noun2 •Any of the clubs making up the international Rotary International movement for community service. •(New-England) A roundabout, traffic circle. adjective1 •Capable of rotation.A rotary engine revolves the heads rather than having pistons go back and forth. formsrotaries
