When you hear the word "Piroutte" what do you think of? The ballet version or the gymnastics version? There are several different kinds of pirouttes for each....right there is more then one kind of piroutte in ballet right? anyway, here is a video of the difference between ballet pirouttes and gymnastics pirouttes.
The turn she does on bar before her dismount is a piroutte. you can also do this on the floor and balance beam.