Noun white thistle has 2 senses
  1. prickly poppy, argemone, white thistle, devil's fig - any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America
    --1 is a kind of herb, herbaceous plant
    --1 is a member of genus Argemone
    --1 has particulars: Mexican poppy, Argemone mexicana
  2. quail bush, quail brush, white thistle, Atriplex lentiformis - spiny shrub with silvery-scurfy foliage of alkaline plains of southwestern United States and Mexico
    --2 is a kind of saltbush
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