Pop·py n.; pl. Poppies   Bot. Any plant or species of the genus Papaver, herbs with showy polypetalous flowers and a milky juice.  From one species (Papaver somniferum) opium is obtained, though all the species contain it to some extent; also, a flower of the plant. See Illust. of Capsule.
  California poppy Bot., any yellow-flowered plant of the genus Eschscholtzia.
  Corn poppy. See under Corn.
  Horn poppy, or Horned poppy. See under Horn.
  Poppy bee Zool., a leaf-cutting bee (Anthocopa papaveris) which uses pieces cut from poppy petals for the lining of its cells; -- called also upholsterer bee.
  Prickly poppy Bot., Argemone Mexicana, a yellow-flowered plant of the Poppy family, but as prickly as a thistle.
  Poppy seed, the seed the opium poppy (Papaver somniferum).
  Spatling poppy Bot., a species of Silene (Silene inflata). See Catchfly.
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  prickly poppy
       n 1: any plant of the genus Argemone having large white or yellow
            flowers and prickly leaves and stems and pods; chiefly
            of tropical America [syn: argemone, white thistle, devil's
            fig]
       2: annual Old World poppy with orange-red flowers and bristly
          fruit [syn: Papaver argemone]