Joust

Joust, Jousting
Gamer Slang. A combat technique for Melee classes. Refers to a technique of running into melee range, doing damage quickly then, as soon as the mob begins to cast, backing off to a safe distance to wait out his big attack. As soon as his skill goes off, run back in and pummel him. Repeat until he is dead or you make a mistake and you are.
Sometimes the Tank will need to stay in Melee Range throughout the fight while everyone else Jousts to avoid overtaxing the Healer.
This strategy is common with certain Bosses, as well as some very annoying normal monsters.