1.The battle-cry of a rabid fangirl.
2.To express joy of something.
3.In the fangirl world,not only is it a battle-cry,it is a sport.
"SQUEEEEEEEE!!!!!!!!!!! *glomps (insert anime character's name here)*
"Avril Lavigne is playing tonight!! SQUEE!!"
"I can squee longer then you can, SQUEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"