Source : Webster's Revised Unabridged Dictionary (1913)

Salvo \Sal"vo\, n.; pl. {Salvos}. [L. salvo jure, literally, the
   right being reserved. See {Safe.}]
   An exception; a reservation; an excuse.

         They admit many salvos, cautions, and reservations.
                                                  --Eikon
                                                  Basilike.