Meaning of “bulletproof” in the English Dictionary

british dictionary

"bulletproof" in British English

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bulletproofadjective

uk /ˈbʊl.ɪt.pruːf/ us /ˈbʊl.ɪt.pruːf/

Something that is bulletproof prevents bullets from going through it:

bulletproof glass
a bulletproof vest

(Definition of “bulletproof” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"bulletproof" in American English

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bulletproofadjective

us /ˈbʊl·ɪtˌpruf/

able to prevent bullets from going through:

The limo has bulletproof glass.

(Definition of “bulletproof” from the Cambridge Academic Content Dictionary © Cambridge University Press)