Meaning of “alibi” in the English Dictionary

american-english dictionary

"alibi" in British English

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alibinoun [ C ]

uk /ˈæl.ɪ.baɪ/ us /ˈæl.ɪ.baɪ/

proof that someone who is thought to have committed a crime could not have done it, especially the fact or statement that they were in another place at the time it happened:

He has a cast-iron (= very strong) alibi - he was in hospital the week of the murder.

an excuse for something bad or for a failure:

After eight years in power, the government can no longer use the previous government's policy as an alibi for its own failure.

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

"alibi" in American English

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alibinoun [ C ]

us /ˈæl·əˌbɑɪ/

proof that someone who is thought to have committed a crime could not have done it, esp. the fact or claim that the person was in another place at the time the crime happened

An alibi is also an excuse for something:

You’re late again – what’s your alibi this time?

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