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

• free throw
• free throw lane
• free time
• free trade
• free trader
• free verse
• free weight
• Free World
• free zone
• free-and-easy
• free-associate
• free-base
• free-enterprise
• free-floating
• free-flying
• free-for-all
• free-liver
• free-living
• free-range
• free-reed
• free-reed instrument
• free-soil
• free-spoken
• free-swimming
• free-to-air