definition of
alibi

[1] #1 alibi n. (law) a defense by an accused person purporting to show that he or she could not have committed the crime in question. wn

[2] #2 alibi v. exonerate by means of an alibi. wn

[3] #3 alibi n. [excuse, exculpation, self-justification] 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". wn