n.
Pronunciation: ' f ī (- ə )r- ˌ bo ̇ l
Function: noun
Date: 1555
1 : a ball of fire also : something resembling such a ball <the primordial fireball associated with the beginning of the universe ― Scientific American >
2 : a brilliant meteor that may trail bright sparks
3 : the highly luminous cloud of vapor and dust created by a nuclear explosion
4 : a highly energetic person