bundle of rods containing an axe with the blade protruding; in ancient Rome it was a symbol of a magistrate's power; in modern Italy it is a symbol of fascism
(computer science) a copy of a file or directory on a separate storage device; "he made a backup in case the original was accidentally damaged or erased"
an accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet"