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 noun monarch butterfly  n.  (Zool.) A very large red and black butterfly (Danais Plexippus) having striking orange-brown wings with black veins in a reticulated pattern; called also milkweed butterfly and monarch. Its larvae feed on the leaves of the milkweed. 
 
 
 
 
 
 Collaborative International Dictionary of English 0.48 
 
 
 
 
 
 
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