white thistle
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: spiny shrub with silvery-scurfy foliage of alkaline plains of
southwestern United States and Mexico [syn: {quail bush},
{quail brush}, {white thistle}, {Atriplex lentiformis}]