Unconventional ogre face. Usually utilized on line.
Floppy disk drive letter on PC computer systems associated with the 5.25-inch and sometimes the 3.5-inch floppy disk drive. These days, it is very uncommon for some type of computer to list a-b: drive since 5.25" floppy drives are not any much longer supported in Microsoft windows & most computer systems today do not need a 3.5" floppy drive, let alone two floppy drives.
Class B: Directional relation constant; velocity ratio varying.