Funny and amusing situations...

I think it meant games like Lineage II, where you have a hero.

No, I was talking about Warcraft...
There's a map called Legion TD, and there your units with a large health reserve attack units until the smaller ones, like archers and mages, shoot them down...
A tank is a unit with a large health reserve and defense, which stands in the 1st line of defense, like a wall.