/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)