1. Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America
   - star-thistle, caltrop

Type of: centaury

• prosthodontia
• prosthodontic
• prosthodontics
• prosthodontist
• Prostigmin
• prostitute
• prostitution
• prostitutor
• prostrate
• prostration
• prostyle
• prosumer
• prosy
• protactinium
• protagonism
• protagonist
• protamine
• protanopia
• protanopic
• protasis
• protea
• Protea cynaroides
• protea family
• Protea mellifera
• Proteaceae