(law) a defense by an accused person purporting to show that he or she could not have committed the crime in question
source: WordNet 3.0
a defense of some offensive behavior or some failure to keep a promise etc.
He kept finding excuses to stay. Every day he had a new alibi for not getting a job. His transparent self-justification was unacceptable.
source: WordNet 3.0
The plea or mode of defense under which a person on trial for a crime proves or attempts to prove that he was in another place when the alleged act was committed; as, to set up an alibi; to prove an alibi.
