alibi/ˈæl.ə.baɪ/EtymologyFrom the 18th century, from Latin alibī (“elsewhere, at another place”, adverb). Probably after French alibi, which has this use since the late 14th century.alibi means the plea or mode of defense under which a person on trial for a crime proves or attempts to prove being in another place when the alleged act was committed. Lexicurio rates it Distinctive — a strength score of 68 out of 100.alibi is pronounced /ˈæl.ə.baɪ/.nounThe plea or mode of defense under which a person on trial for a crime proves or attempts to prove being in another place when the alleged act was committed.“to set up an alibi”An excuse, especially one used to avoid responsibility or blame.“That day in September, I'm sure you can remember / That's when all the stuff hit the fan (the stuff hit the fan) / You told me a lie, and you didn't have an alibi / But baby, yet I still cared”verbTo provide an alibi for.To provide an excuse for.