The DICT Development Group

  Poppy \Pop"py\, n.; pl. Poppies. [OE. popy, AS. popig, L.
     papaver.] (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.
     [1913 Webster]
  
     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.
        [1913 Webster] Poppy

  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: prickly poppy,
           argemone, white thistle, devil's fig]
      2: annual Old World poppy with orange-red flowers and bristly
         fruit [syn: prickly poppy, Papaver argemone]