backup

Backup is what someone gives when they help or support you. A brand new doctor might need some backup in the emergency room for the first few weeks.

Use the noun backup when you talk about extra assistance or help. Police officers call for backup when they're not sure they can handle a situation on their own, and store cashiers need backup when things get busy and customers start lining up. Another kind of backup is the one you do on your computer — in this case, a backup is the process of copying your data in case you lose the original files.

Primary Meanings of backup

1.
n
the act of providing approval and support
2.
n
an accumulation caused by clogging or a stoppage
3.
n
(computer science) a copy of a file or directory on a separate storage device
Full Definitions of backup
1

n the act of providing approval and support

Synonyms:
backing, championship, patronage
Type of:
approval, approving, blessing
the formal act of approving

n a musical part (vocal or instrumental) that supports or provides background for other musical parts

Synonyms:
accompaniment, musical accompaniment, support
Types:
descant, discant
a decorative musical accompaniment (often improvised) added above a basic melody
vamp
an improvised musical accompaniment
Type of:
part, voice
the melody carried by a particular voice or instrument in polyphonic music

n someone who takes the place of another (as when things get dangerous or difficult)

Synonyms:
backup man, fill-in, relief, reliever, stand-in, substitute
Types:
locum, locum tenens
someone (physician or clergyman) who substitutes temporarily for another member of the same profession
double, stunt man, stunt woman
a stand-in for movie stars to perform dangerous stunts
alternate, replacement, surrogate
someone who takes the place of another person
Type of:
compeer, equal, match, peer
a person who is of equal standing with another in a group
2

n an accumulation caused by clogging or a stoppage

“a traffic backup on the main street”
“he discovered a backup in the toilet”
Type of:
accretion, accumulation
an increase by natural growth or addition
3

n (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”
Synonyms:
computer backup
Type of:
duplicate, duplication
a copy that corresponds to an original exactly

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