Meaning
AL, In English, is sometimes a contraction of the Saxon athel, noble or illustrious.
More generally al, in composition is a contraction of ald or alt, old, and it is prefixed to many names, as Alburg.
Al, in the composition of Latin words, is written before l for ad, for the ease of pronunciation; as, in allevo, alludo, for ad levo, ad ludo.