back up

Definition of back up

back´ up
v. i.1.to move in a reverse direction; - used of vehicles or animals.
2.to accumulate due to a blockage of flow; as, a traffic backup due to an accident; a sewage backup.
v. t.1.to serve as a backup{3} for (another person or persons); as, the patrolmen backed up the detectives as they went inside to make the arrest; the center fielder backed up the shortstop on the play.
2.(Computers) to make a backup{5} of; as, the sysop backed up the purchasing data files every night.

Related Words

advance, aid, assist, back, backing, backup, boost, buy at, championship, encourage, endorse, frequent, further, help, indorse, patronage, patronise, patronize, promote, second, shop, shop at, sponsor, support, undergird
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Bacillariae
Bacillary
bacilli
Bacilliform
Bacillus
bacitracin
Back
Back and forth
Back blocks
Back charge
Back charges
Back door
Back eccentric
Back filling
Back pressure
Back rest
Back slang
Back stairs
Back step
Back stream
-back up-
Back-acting steam engine
back-and-forth
back-formation
back-to-back
backache
Backarack
Backare
Backband
backbench
backbencher
backbend
Backbite
Backbiter
Backbiting
Backboard
Backbond
Backbone
Backboned
Backcast
backdate
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