flippy

from Jargon File (4.4.4, 14 Aug 2003)

flippy
 /flip'ee/, n.

   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 to be accessible. No longer common.

from The Free On-line Dictionary of Computing (8 July 2008)

flippy

   <storage> /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)