An airport is a wireless connection used for the iBooks made by Apple.  The ibook is a laptop computer which allows wireless connectivity for an analog mode, cable modem or DSL modem up to 150 feet from the phone lines.  The iBook has a built in antenna and the airport which includes a plug-in card for the machine and base station.

iBook     The iBook was first introduced in July at the Macworld Expo.

What does this mean to me?  To me it means I need to write a grant for $10,000 to supply my school with 10 of these.  I can't think of an easier way to transport machines from room to room.
We couldn't even get our new G4 out the door (literally- they ordered a cart on wheels that didn't fit through the door). Only in education!