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

Type of: thistle

• Pithecellodium unguis-cati
• Pithecia
• Pithecolobium
• pithily
• pithiness
• pithy
• pitiable
• pitiably
• pitiful
• pitifully
• pitiless
• pitilessly
• pitilessness
• pitman
• Pitocin
• piton
• Pitot
• Pitot head
• Pitot tube
• Pitot-static tube
• pitprop
• Pitressin
• pitsaw
• Pitt
• Pitt the Elder