1. An especially luminous meteor, sometimes exploding
   "Witnesses reported seeing a bright fireball streak across the night sky";
   - bolide
    
2. A ball of fire (such as the sun or a ball-shaped discharge of lightning)
   "A brilliant fireball streaked across the night sky"; "The sun appeared as a massive fireball on the horizon"
    
3. The luminous centre of a nuclear explosion
   "The fireball from the atomic bomb test lit up the sky for miles"; "Witnesses reported seeing a blinding fireball during the explosion"
    
4. A highly energetic and indefatigable person
   "Despite her age, she was a fireball, organizing multiple charity events each month";
   - powerhouse, human dynamo [informal], ball of fire [informal]

Derived forms: fireballs

Type of: actor, ball, doer, falling star, globe, meteor, orb, shooting star, worker

Part of: atomic explosion, nuclear explosion

Encyclopedia: Fireball