monarch
noun
[ ˈmɒnək ]
• a sovereign head of state, especially a king, queen, or emperor.
• "the reigning monarch"
Similar:
sovereign,
ruler,
Crown,
crowned head,
potentate,
king,
queen,
emperor,
empress,
prince,
princess,
tsar,
• a large migratory orange and black butterfly that occurs mainly in North America. The caterpillar feeds on milkweed, using the toxins in the plant to render both itself and the adult unpalatable to predators.
• a flycatcher found in Africa, Asia, and Australasia, typically having boldly marked or colourful plumage.
Origin:
late Middle English: from late Latin monarcha, from Greek monarkhēs, from monos ‘alone’ + arkhein ‘to rule’.
