Săl'vō, n.
n.; pl. SĀL'VŌS. [Lat. salvo jure, an expression used in reserving rights.]
Sense 1. An exception; reservation; an excuse. They admit many salvos, cautions, and reservations. K. Charles.
Sense 2. (Mil.) A general discharge of fire-arms not intended for a salute; a volley. “Bursting their gates with a salvo of our cannon.” W. Scott.