"Fiona" was the original code-name for Amazon's Kindle.

The Kindle got its original name from a book called "The Diamond Age" by Neal Stephenson.

It was a novel set in the future about an engineer who steals a rare interactive textbook to give to his knowledge-hungry daughter, Fiona. The team that worked on Kindle prototypes thought of that fictitious textbook as the template for the device that they were working on.

The team eventually begged Bezos to keep the name Fiona, but he decided on another suggestion, Kindle, because it evoked the idea of starting a fire.