'Prickly poppy' definitions:

Definition of 'prickly poppy'

(from WordNet)
noun
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]
noun
Annual Old World poppy with orange-red flowers and bristly fruit [syn: prickly poppy, Papaver argemone]

Definition of 'Prickly poppy'

From: GCIDE
  • 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