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Definition alibi in American English

alibi noun

[countable] noun
/ˈælɪˌbaɪ/
1

someone who has an alibi can prove that they were somewhere else when a crime was committed and so can claim to be not guilty

Example

His wife, of course, provided him with an alibi.

Example

Smith had a cast-iron alibi since he was in prison at the time of the crime.

Synonyms and related words
2

an excuse for not having done something that you should have done

Synonyms and related words
Definition alibi in American English