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Meaning of “master key” in the English Dictionary

"master key" in British English

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master keynoun [C]

uk   /ˈmɑː.stə ˌkiː/  us   /ˈmæs.tɚ ˌkiː/
a ​key that can be used to ​open any of several different ​locks
(Definition of master key from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"master key" in American English

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master keynoun [C]

 us   /ˈmæs·tər ˈki/
a key that can be used to ​open a ​number of different ​locks
(Definition of master key from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “master key”
in Chinese (Simplified) 万能钥匙…
in Chinese (Traditional) 萬能鎖匙…
What is the pronunciation of master key?
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