Tudor \Tu"dor\, a. Of or pertaining to a royal line of England, descended from Owen Tudor of Wales, who married the widowed queen of Henry V. The first reigning Tudor was Henry VII.; the last, Elizabeth. {Tudor style} (Arch.), the latest development of Gothic architecture in England, under the Tudors, characterized by flat four-centered arches, shallow moldings, and a profusion of paneling on the walls.