backup
Nouns
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(n) an accumulation caused by clogging or a stoppage
- a traffic backup on the main street
- he discovered a backup in the toilet
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(n) someone who takes the place of another (as when things get dangerous or difficult)
- the star had a stand-in for dangerous scenes
- we need extra employees for summer fill-ins
- (n) a musical part (vocal or instrumental) that supports or provides background for other musical parts musical accompaniment, accompaniment, support,
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(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
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(n) the act of providing approval and support
- his vigorous backing of the conservatives got him in trouble with progressives