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1. (law) a defence by an accused person purporting to show that he or she could not have committed the crime in question
    
2. A defence of some offensive behaviour or some failure to keep a promise etc.
   "every day he had a new alibi for not getting a job"
   - excuse, exculpation, self-justification

1. Exonerate by means of an alibi

Derived forms: alibiing, alibied, alibis

Type of: defence [Brit, Cdn], defense [US], excuse, explain, vindication

Encyclopedia: Alibi