A sally is a sudden rush outward, especially a quick military attack from a defensive position. Picture soldiers trapped inside a castle during a siege: instead of just waiting, they burst through the gates in a surprise sally to catch their attackers off guard, then retreat back to safety.

The word comes from military history, when defenders would make these bold, risky moves to disrupt enemy plans or gather supplies. A sally required courage because you were leaving your safe position to strike fast and return before the enemy could respond.

Today, people use sally more broadly for any quick venture out and back. You might sally forth from your house on a rainy morning, dashing to the car and back inside. The phrase sally forth means to set out boldly on an adventure or mission, like when your class sallies forth on a field trip.

The word carries a sense of energy and boldness. When you sally forth, you're not trudging reluctantly. You're stepping out with purpose and confidence, ready for whatever comes next.