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backup

/ˈbækʌp/  ·  say it: BAK·up

a copy of data kept in case the original is lost

In Technology & Computing

In more detail

1. (noun) a copy of computer files or data stored separately as protection against loss

2. (noun) a person or thing ready to use if the main one fails

3. (noun) a traffic jam or line of vehicles moving slowly

4. (verb) to make a copy of computer files or data for safety

5. (verb) to move backward

6. (verb) to support someone or something

Examples

• 1. I keep a backup of all my important documents on an external drive.
• 2. The backup goalkeeper will play if the main goalkeeper gets injured.
• 3. There was a backup of traffic on the highway after the accident.

Nearby in Technology & Computing

bug, user interface, authentication, big data, binary, boot