Another and larger part of Tiffany's brain was thinking of the word susurrus. It was a word that not many people have thought about, ever. [...]Emphasis not mine.
Susurrus... according to her grandmother's dictionary, it meant "a low soft sound, as of whispering or muttering." Tiffany liked the taste of the word. It made her think of mysterious people in long cloaks whispering important secrets behind a door: susurrusssusurrusss... (4)