1. To make a sudden attack of an enemy from a defended position by rushing out: The troops sallied against the surrounding military forces in a desperate effort to escape from their enclosure.
2. To set out or to depart on an excursion or a venture: Dustin and Beatrice sallied forth from their camp to explore the forests around the mountain.
3. A bounding out or a rush to leave: After the bell rang ending the last class of the day, the students sallied out of the classrooms.