monarch

US /ˈmɑː.nɚk/
UK /ˈmɑː.nɚk/
"monarch" picture
1.

a sovereign head of state, especially a king, queen, or emperor

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The monarch delivered a speech to the nation.
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Many countries are still governed by a monarch.
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sovereignrulerhead of statekingqueenemperorempress
2.

a large migratory American butterfly with a striking orange and black pattern, breeding in Canada and the US and migrating to Mexico and California in winter

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The garden was filled with beautiful monarchs fluttering among the flowers.
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The migration of the monarch butterfly is an amazing natural phenomenon.
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monarch butterfly