/flip' ee/ A SIngle-SIded floppy disk altered for double-SIded use by addition of a second write-notch, so called because it must be flipped over for the second SIde (the "flip SIde") to be accesSIble. Used in the {Commodore 1541} and elsewhere. No longer common. [Jargon File] (2000-03-07)