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English definition of “fireball”

fireball

noun [C] uk   /ˈfaɪə.bɔːl/ us    /ˈfaɪr.bɑːl/
a large ball of fire, especially one caused by a very powerful explosion: Witnesses reported seeing a huge orange fireball as the oil refinery exploded.
(Definition of fireball from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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