Topic: COMPUTERS
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back‧up
1 [countable] something that you can use to replace something that does not work or is lost : Always have a backup plan. a backup generator
Always have a backup plan.a backup generator2TD [countable] a copy of a computer document, program etc, which is made in case the original becomes lost or damaged : Make a backup of any work you do on the computer.
Make a backup of any work you do on the computer.3 [uncountable] people or things that can be used to provide support and help if they are needed : Army units can only operate if they have sufficient backup. a backup team
Army units can only operate if they have sufficient backup.a backup team4 [countable] American English someone who will play in a sports team if one of the other players is injured or ill [= reserve]: a backup goalie
a backup goalie