What does the word alibi mean?

Usage examples for alibi

  1. I see, he might have proved an alibi. – The Adventure of Wisteria Lodge by Arthur Conan Doyle
  2. If he can prove an alibi," said Henry, " that is different; he will tell where he was, and the matter will be settled." – Marguerite de Valois by Alexandre Dumas
  3. Does that constitute an alibi? – The Diamond Master by Jacques Futrelle