salvo

Etymology 1

From Latin salvo, ablative of salvus, the past participle of salvāre (“to save, to reserve”), either from salvo jure (“the right being reserved”), or from salvo errore et omissone (“reserving error and omission”).

noun

1. An exception; a reservation; an excuse.
   1649, Charles I of England (attributed), Eikon Basilike They admit […] salvos, cautions, and reservations.

Etymology 2

A 1719 alteration of salva (“simultaneous discharge of guns”) (1591) from Latin salva (“salute, volley”) (compare French salve, also from Italian), from Latin salve (“hail”), the usual Roman greeting, imperative of salvere (“to be in good health”).

noun

1. (military) 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.
3. (by extension) Any volley, as in an argument or debate.
   It was an impressive opening salvo from the Baggies, especially for a side that have made a poor beginning to what has been an admittedly tough start to their campaign. October 1, 2011, Phil Dawkes, “Sunderland 2 - 2 West Brom”, in BBC Sport
   Together, Johnson's plans mean that the clashes in parliament and the Supreme Court may be only the opening salvos in what promises to be the biggest constitutional storm in centuries. October 6, 2019, Tim Shipman, Caroline Wheeler, “'Sack me if you dare,' Johnson will tell Queen”, in The Sunday Times, number 10,178, page 1
4. The combined cheers of a crowd.

verb

1. (transitive, intransitive) To discharge weapons in a salvo.