agrostemma : Idioms & Phrases
agrostemma githago
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noun European annual having large trumpet-shaped reddish-purple flowers and poisonous seed; a common weed in grainfields and beside roadways; naturalized in America
corn campion; crown-of-the-field; corn cockle.
WordNet
genus agrostemma
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noun a caryophylloid dicot genus including corn cockles
Agrostemma.