backup
A copy of computer files kept in case the originals are lost or broken.
A duplicate of computer files or data that is kept separately to protect against loss or damage.
Someone or something ready to help or replace another if needed.
A person, group, or piece of equipment that is available to take over or assist if the main one fails or is unavailable.
When cars, people, or things cannot move because something is blocking the way.
A situation where movement or progress is slowed or stopped due to an obstruction, causing things to pile up.
To make another copy of computer files so they are safe.
To create a duplicate copy of data or files to prevent loss.
- Base: backup
- Plural: backup, backups
backup plan
1Spare plan in case of failure
Another plan you can use if your first plan does not work.
- We need a backup plan in case it rains on the wedding day.
- Always have a backup plan when traveling abroad.
call for backup
2Ask for extra help urgently
To ask other people to come and help quickly, usually in emergencies.
- The officer had to call for backup when the crowd got violent.
- We may need to call for backup if the project falls behind schedule.
backup generator
3Spare power generator for outages
A machine that makes electricity when the main power stops working.
- The hospital uses a backup generator during blackouts.
- The hospital's backup generator started automatically during the blackout.
- We installed a backup generator for emergencies.
- We installed a backup generator to protect the servers from power cuts.
- The school relies on a backup generator in the rainy season.