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English definition of “backlog”

backlog

noun [C usually singular] uk   /ˈbæk.lɒɡ/ us    /-lɑːɡ/
a large number of things that you should have done before and must do now: I've got a huge backlog of work to do.Masses and large amounts of things
(Definition of backlog from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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