1. An especially luminous meteor (sometimes exploding)
   - bolide 
2. A highly energetic and indefatigable person
   - powerhouse, human dynamo, ball of fire 
3. A ball of fire (such as the sun or a ball-shaped discharge of lightning) 
4. The luminous centre of a nuclear explosion

Derived forms: fireballs

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

Part of: atomic explosion, nuclear explosion

Encyclopedia: Fireball

• welcome mat
• welcome wagon
• welcomer
• welcoming
• welcoming committee
• weld
• weldable
• welder
• welder's mask
• welding
• weldment
• welfare
• welfare case
• welfare state
• welfare work
• welfare worker
• welfare-statist
• welfarist
• welkin
• well
• well done
• well I never
• well out
• well over
• well thought out