noun
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the plant Papaver somniferum of Papaveraceae family, with greyish-green leaves and large, white or purple flowers, the source of opium; opium poppy.
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the seed of this plant, contains such alkaloids as morphine, codeine, and papaverine, and is used as an intoxicant and medicinally to relieve pain and produce sleep; opium.
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the grass Scirpus kysoor.