An 'alibi' is 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. The ''Criminal Law Deskbook'' of Criminal Procedure
[1] states: "Alibi is different from all of the other defenses...it is based upon the premise that the defendant is truly innocent.". In the Latin language "alibi" means "somewhere else."
References
1. 1988; ISBN 0-8205-1217-6