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English definition of “knapsack”

knapsack

noun [C] /ˈnæp.sæk/ UK old-fashioned or US
a bag carried on the back or over the shoulder, used especially by people who go walking or climbing for carrying food, clothes, etc.Containers for carrying personal possessions
(Definition of knapsack noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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