To issue suddenly from a defensive or besieged position to attack an enemy.
To set out on a trip or excursion: sallied forth to see the world.
n.
pl.sal·lies
A sudden rush forward; a leap.
An assault from a defensive position; a sortie.
A sudden emergence into action or expression; an outburst.
A sudden quick witticism; a quip. See Synonyms at joke.
A venturing forth; a jaunt.
[From French saillie, a sally, from Old French, from feminine past participle of salir, to rush forward, from Latin salīre, to leap; see sel- in Indo-European roots.]