Definition of bombshell
1
: bomb sense 1a
2a
: one that is stunning, amazing, or devastating
The book was a political bombshell.
b
: a person who is the cause and object of sensational and usually widespread attention, excitement, or attraction
a blonde bombshell [=a glamorously attractive blonde woman]
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Merriam-Webster unabridged
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Time Traveler for bombshell
The first known use of bombshell was in 1708
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