A floppy drive is a device that reads floppy disks. (In the pre- and early- 1990s it used to be a 5&1/4" floppy). Other types of floppy drives can be LS120 drives, and possibly (but less likely to be considered a floppy) Zip drives. Floppy drives are just short of obsolescence - floppies are used just enough to justify the presence of a floppy drive on a computer.
Mounting Floppy Disks
Under Linux, a floppy drive is usually assigned to the special device file /dev/fd0. For example, one can access a floppy disk as follows...
# su (enter password) # mount /dev/fd0 /mnt/floppy # exit # cd /mnt/floppy
/etc/fstab: /dev/floppy /mnt/floppy vfat noauto,user 0 0
Then, one can say...
# mount /mnt/floppy # cd /mnt/floppy