|"There are plenty of eye-witness accounts. Just because you're so narrow-minded you need to have everything shoved under your nose before you–"
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Gulf is a potion ingredient of unknown effect. Gulf is old English for "throat", and it is likely that, when it is referred to in the song "Something Wicked This Way Comes", it is referring to the gulf of a Witches' Mummy.
- Harry Potter and the Prisoner of Azkaban (film) (Mentioned only)