[eridius]

"iBook" is an old plastic laptop that Apple used to sell. Things that iBooks can display are simply called "books" (or PDFs).

[eddieroger]

Whew, glad I'm not the only one who remembered that. I saw the title and flashed back to 1999, where I was surrounded by lime green and bondi blue plastic clamshells.

[qq66]

Or "e-books."