alibi
al·i·bi
/ˈæləˌbaı/ noun , pl -bis [ count ]
1 : a claim that you cannot be guilty of a crime because you were somewhere else when the crime was committed
Nobody could confirm his alibi that he was at the movies.
He has an ironclad/perfect alibi. [=an alibi that cannot be proved false]
also : evidence which shows that such a claim is true
Her doctor is her alibi: she was in surgery at the time of the murder.
2 : an excuse for not being somewhere or doing something
She made up an alibi for why she missed the meeting.
