Noun has 2 senses

• white thistle(n = noun.plant) argemone, devil's fig, prickly poppy - any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America;




• white thistle(n = noun.plant) atriplex lentiformis, quail brush, quail bush - spiny shrub with silvery-scurfy foliage of alkaline plains of southwestern United States and Mexico;