Do you know the meaning behind Harry Potter spells like Expelliarmus and Wingardium Leviosa? In this episode of The List Show, Erin breaks down the origins of 30 Harry Potter terms. You’ll learn where Dumbledore’s name comes from and how the etymology of "horcrux" has been debated. Users of the three Unforgivable Curses and and Emma Watson super-fans will want to watch.