1. A mild form of smallpox caused by a less virulent form of the virus
   - alastrim, variola minor, pseudosmallpox, pseudovariola, white pox, West Indian smallpox, Cuban itch, Kaffir pox

Type of: smallpox, variola, variola major

• blue toadflax
• blue tulip
• blue vitriol
• blue wall
• blue wall of silence
• blue walleye
• blue whale
• blue-belly
• blue-black
• blue-blind
• blue-blindness
• blue-blooded
• blue-chip stock
• blue-collar
• blue-eyed
• blue-eyed African daisy
• blue-eyed boy
• blue-eyed grass
• blue-eyed Mary
• blue-flowered
• blue-fruited
• blue-gray
• blue-green
• blue-green algae
• blue-grey