Empress - a woman Emperor or the wife of an Emperor

Holy Roman Emperor - sovereign of the Holy Roman Empire

Kaiser - the title of the Holy Roman Emperors or the emperors of Austria or of Germany until 1918

mikado, tenno - the emperor of Japan; when regarded as a religious leader the emperor is called tenno

Emperor of Rome, Roman Emperor - sovereign of the Roman Empire

crowned head, monarch, sovereign - a nation's ruler or head of state usually by hereditary right

Francis Joseph, Francis Joseph I, Franz Josef I, Franz Joseph - emperor of Austria and king of Hungary; was defeated by Napoleon III at the battle of Magenta (1830-1916)

Genghis Khan, Jenghiz Khan, Jinghis Khan - Mongolian Emperor whose empire stretched from the Black Sea to the Pacific Ocean (1162-1227)

Haile Selassie, Ras Tafari, Ras Tafari Makonnen - emperor of Ethiopia; worshipped by Rastafarians (1892-1975)

Hirohito, Michinomiya Hirohito - emperor of Japan who renounced his divinity and became a constitutional monarch after Japan surrendered at the end of World War II (1901-1989)

Justinian, Justinian I, Justinian the Great - Byzantine emperor who held the eastern frontier of his empire against the Persians; codified Roman Law in 529; his general Belisarius regained North Africa and Spain (483-565)

Kubla Khan, Kublai Kaan, Kublai Khan - Mongolian emperor of China and grandson of Genghis Khan who completed his grandfather's conquest of China; he establish the Yuan dynasty and built a great capital on the site of modern Beijing where he received Marco Polo (1216-1294)

Meiji Tenno, Mutsuhito - emperor of Japan who encouraged the modernization of Japan (1852-1912)

Montezuma II - the last Aztec emperor in Mexico who was overthrown and killed by Hernando Cortes (1466-1520)

Bonaparte, Napoleon, Napoleon Bonaparte, Napoleon I, the Little Corporal - French general who became emperor of the French (1769-1821)

Charles Louis Napoleon Bonaparte, Emperor Napoleon III, Napoleon III - nephew of Napoleon I and emperor of the French from 1852 to 1871 (1808-1873)

Shah Jahan - Mogul emperor of India during whose reign the finest monuments of Mogul architecture were built (including the Taj Mahal at Agra) (1592-1666)

vinifera grape - grape from a cultivated variety of the common grape vine of Europe

saturniid, saturniid moth - large brightly colored and usually tropical moth; larvae spin silken cocoons

genus Saturnia, Saturnia - type genus of the Saturniidae: emperor moth

brush-footed butterfly, four-footed butterfly, nymphalid, nymphalid butterfly - medium to large butterflies found worldwide typically having brightly colored wings and much-reduced nonfunctional forelegs carried folded on the breast

Apatura, genus Apatura - large Old World butterflies

Apatura iris, purple emperor - large European butterfly the male of which has wings shaded with purple