Backup (Noun)
Meaning 1
A musical part (vocal or instrumental) that supports or provides background for other musical parts.
Classification
Nouns denoting communicative processes and contents.
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Meaning 2
(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".
Classification
Nouns denoting man-made objects.
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Meaning 3
An accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet".
Classification
Nouns denoting natural processes.
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Meaning 4
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".
Classification
Nouns denoting people.
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Meaning 5
The act of providing approval and support; "his vigorous backing of the conservatives got him in trouble with progressives".
Classification
Nouns denoting acts or actions.