Definition of Backup
a person or thing that assists or supports someone/something else
Examples of Backup in a sentence
The working mother is looking for a backup babysitter to watch her daughter on days her nanny cannot care for the child. 🔊
For safety reasons, the accountant uses a backup drive to store extra copies of the important files saved on his computer. 🔊
The singer brings several backup dancers to sing in harmony with her on several parts of the song. 🔊
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