Definify.com
Webster 1913 Edition
Salvo
Sal′vo
,Noun.
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.
Sal′vo
,Noun.
 [F. 
salve 
a discharge of heavy cannon, a volley, L. salve 
hail, imperat. of salvere 
to be well, akin to salvus 
well. See Safe
.] 1. 
(Mil.) 
A concentrated fire from pieces of artillery, as in endeavoring to make a break in a fortification; a volley. 
2. 
A salute paid by a simultaneous, or nearly simultaneous, firing of a number of cannon. 
Webster 1828 Edition
Salvo
SAL'VO
,Noun.
  They admit many salvos, cautions and reservations.