backup

noun

/ˈbæk.ʌp/

Definition

B2 [C or U] (someone or something that provides) support or help, or something that you have arranged in case your main plans, equipment, etc. go wrong: We're going to need some professional backup for this project. The party is going to be outdoors, so we'll need to organize somewhere as a backup in case it rains. Remember, your colleagues are your backup system when things go wrong.Helpers and accomplicesPeople who help or serve people professionally B2 [C] a copy of information held on a computer that is stored separately from the computer: Before we leave work each day, we make a backup of all the records we have entered into the computer that day. The department's backup disks are all stored in a different building.Computer concepts › [C] US a player who plays when the person who usually plays is not available: He's a backup for the Dallas Cowboys.Helpers and accomplicesPeople who help or serve people professionally

(Definition of backup noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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