1. Perennial stoloniferous thistle of northern Europe with lanceolate basal leaves and usually solitary heads of reddish-purple flowers
   - melancholy thistle, Cirsium helenioides

Type of: thistle

• rogue
• rogue elephant
• rogue nation
• rogue state
• rogue's gallery
• roguery
• roguish
• roguishly
• roguishness
• Rohypnol
• ROI
• roil
• pomme blanche
• pomme de prairie
• pommel
• pommel horse
• pommie
• pommy
• Pommyland
• Pomo
• Pomolobus
• Pomolobus pseudoharengus
• pomological
• pomologist
• pomology