white thistle Meaning, Definition & Usage
- 
       noun any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America
       
       
 prickly poppy; devil's fig; argemone.
 
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       noun spiny shrub with silvery-scurfy foliage of alkaline plains of southwestern United States and Mexico
       
       
 Atriplex lentiformis; quail brush; quail bush.