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

• heller
• helleri
• Hellespont
• hellfire
• hellgrammiate
• hellhole
• hellhound
• hellion
• hellish
• hellishly
• Hellman
• hello
• helluva
• helm
• helmet
• helmet orchid
• helmet-shaped
• helmeted
• helmetflower
• Helmholtz
• helminth
• helminthiasis
• helminthic
• helminthology
• Helminthostachys