of or pertaining to an empire, or to an emperor; as, an imperial government; imperial authority or edict.-belonging to, or suitable to, supreme authority, or one who wields it; royal; sovereign; supreme.-of superior or unusual size or excellence; as, imperial paper; imperial tea, etc.-the tuft of hair on a man's lower lip and chin; -- so called from the style of beard of napoleon iii.-an outside seat on a diligence.-a luggage case on the top of a coach.-anything of unusual size or excellence, as a large decanter, a kind of large photograph, a large sheet of drowing, printing, or writing paper, etc.-a gold coin of russia worth ten rubles, or about eight dollars.-a kind of fine cloth brought into england from greece. or other eastern countries, in the middle ages.