Haman's Daughter and the Refuse
Thinking her father is leading Mordechai's horse, Haman's daughter pours refuse on the leader's head. It is Haman, and when she realizes, she jumps from the roof.
The Gemara in Megillah explains that Haman’s daughter thought that her father was riding on the horse and that Mordechai was leading him. She poured refuse on top of the person leading the horse. However, Haman looked up, and his daughter realized her mistake and jumped from the roof. The pasuk is referring to this when it says “aveil,” mourning; Haman was mourning the loss of his daughter. “Chaphui rosh” means his head was covered in refuse.