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Meaning of fireball

fire•ball

Pronunciation: (fīr'bôl"), [key]
— n.
  1. a ball of fire, as the sun; a shooting star.
  2. a luminous meteor, sometimes exploding.
  3. lightning having the appearance of a globe of fire; ball lightning.
  4. the highly luminous central portion of a nuclear explosion.
  5. a ball filled with explosive or combustible material, used as a projectile to injure the enemy by explosion or to set fire to their works.
  6. an exceptionally energetic or ambitious person.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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