emperor butterfly(n = noun.animal) emperor - large richly colored butterfly;
is a kind of brush-footed butterfly, four-footed butterfly, nymphalid, nymphalid butterfly
is a member of apatura, genus apatura
has particulars: apatura iris, purple emperor

brush-footed butterfly, butterfly, butterfly bush, butterfly collector, butterfly effect, butterfly fish, butterfly flower, butterfly nut, butterfly orchid, butterfly orchis, butterfly pea, butterfly plant, butterfly ray, butterfly stroke, butterfly valve, butterfly weed, cabbage butterfly, comma butterfly, danaid butterfly, emperor, emperor francis ii, emperor moth, emperor napoleon iii, emperor of rome, emperor penguin, four-footed butterfly, greater butterfly orchid, hairstreak butterfly, holy roman emperor, holy roman emperor frederick ii, lesser butterfly orchid, lycaenid butterfly, milkweed butterfly, monarch butterfly, mourning cloak butterfly, nymphalid butterfly, peacock butterfly, pierid butterfly, purple emperor, ringlet butterfly, roman emperor, sea butterfly, southern cabbage butterfly, sulfur butterfly, sulphur butterfly, tortoiseshell butterfly, troilus butterfly