imperial
Cross references: 1. measure 1. im.pe.ri.al \im-'pir-e--*l\ \-*-le-\ aj [ME, fr. MF, fr. LL imperialis, fr. L imperium command, empire] 1a: of, relating to, or befitting an empire or an emperor 1b1: of or relating to the United Kingdom as distinguished from the consti tuent parts 1b2: of or relating to the British Commonwealth and Empire obs 2a: SOVEREIGN 2b: REGAL, IMPERIOUS 3: of superior or unusual size or excellence 4: belonging to the official British series of weights and measures - im.pe.ri.al.ly av 2. imperial n [fr. the beard worn by Napoleon III] cap 1: an adherent or soldier of the Holy Roman emperor 2: EMPEROR 3: a size of paper usu. 23 x 31 inches 4: a pointed beard growing below the lower lip 5: something of unusual size or excellence
Webster's English Dictionary