salvo

An exception; a reservation; an excuse.

1649, Charles I of England (attributed), Eikon Basilike They admit […] salvos, cautions, and reservations.

A concentrated fire from pieces of artillery, as in endeavoring to make a break in a fortification; a volley.

A salute paid by a simultaneous, or nearly simultaneous, firing of a number of cannon.

“Regard not that, my brother,” answered Magdalen Græme; “the first successors of Saint Peter himself, were elected not in sunshine but in tempests—not in the halls of the Vatican, but in the subterranean vaults and dungeons of Heathen Rome—they were not gratulated with shouts and salvos of cannon-shot and of musquetry, and the display of artificial fire—no, my brother—but by the hoarse summons of Lictors and Prætors, who came to drag the Fathers of the Church to martyrdom.[…]”

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.

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.

The combined cheers of a crowd.

To discharge weapons in a salvo.