backuprule
nounUK /ˈbækʌp ruːl/
US /ˈbækʌp ruːl/
A backup rule is a rule that helps you make a copy of something important so you do not lose it.
The teacher made a backup rule so everyone saves their work twice.
OTHER MEANINGS
2. A rule that says you must keep an extra copy of important files.
Our computer class has a backup rule for saving homework.
3. A plan or rule used when the first plan does not work.
If the game is canceled, the backup rule is to play inside.
4. A rule about having a second person ready to help.
The team made a backup rule so someone is always there to help.