backup
noun(back-up)
a musical part (vocal or instrumental) that supports or provides background for other musical parts
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)
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.