help or support:
no police backup could be expected.
a person or thing that can be called on if necessary; a reserve:
I've got a security force as backup [as adj.]
a backup generator.
the procedure for making extra copies of data in case the original is lost or damaged:
automatic online backup |
a backup system.
a copy of this type.
an overflow caused by a stoppage, as in water or automobile traffic:
there are long backups on all routes.
, grown-up, pup, scup, straight-up, stuck-up, summing-up, sup, totting-up, tup, two-up, up, washing-up
•pick-me-up • fry-up • wind-up
•round-up • hold-up • backup • markup
, make-up, shake-up, take-up
, pickup, stick-up
•buttercup • snarl-up • pile-up
•pull-up • warm-up • clean-up • pin-up
•line-up • grown-up
, sun-up, ton-up
•turn-up • hang-up • slap-up • zip-up
•top-up • chirrup • press-up • piss-up
•punch-up • start-up
•sit-up • cut-up • rave-up
A resource that is, or can be used as, a substitute when a primary resource fails or when a file has been corrupted. The word is also used as a verb, to back up
, i.e. to make a copy in anticipation of future failure or corruption. Thus a dump
forms a backup to be used in cases where a user's file has become unusable; the taking of the dump can be regarded as backing up the version on disk.