monarch : Idioms & Phrases
female monarch
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noun a female sovereign ruler
queen; queen regnant.
WordNet
male monarch
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noun a male sovereign; ruler of a kingdom
king; Rex.
WordNet
monarch butterfly
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noun large migratory American butterfly having deep orange wings with black and white markings; the larvae feed on milkweed
milkweed butterfly; monarch; Danaus plexippus.