(esp formerly) a bomb or artillery shell a shocking or unwelcome surprise
WordReference Random House Learner's Dictionary of American English © 2025
bomb•shell /ˈbɑmˌʃɛl/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- something or someone having a sensational effect:His resignation came as a bombshell.
bomb•shell
(bom′shel′),USA pronunciation n.
- Militarya bomb.
- something or someone having a sudden and sensational effect:The news of his resignation was a bombshell.
- 1700–10; 1925–30 for def. 2; bomb + shell
Collins Concise English Dictionary © HarperCollins Publishers::
'bombshell' also found in these entries (note: many are not synonyms or translations):