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backup Definition

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backup
noun(back-up)
a musical part (vocal or instrumental) that supports or provides background for other musical parts
Synonyms: accompaniment, musical accompaniment, support,
backup
noun(back-up)
(computer science) a copy of a file or directory on a separate storage device
Synonyms: computer backup,
Examples:
He made a backup in case the original was accidentally damaged or erased.
backup
noun(back-up)
the act of providing approval and support
backup
noun(back-up)
someone who takes the place of another (as when things get dangerous or difficult)
Synonyms: backup man, fill-in, relief, reliever, stand-in, substitute,
backup
noun(back-up)
an accumulation caused by clogging or a stoppage
Examples:
A traffic backup on the main street.
He discovered a backup in the toilet.

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