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English definition of “reserve”

reserve

noun     /rɪˈzɜːv/ US  /-ˈzɝːv/
the reserves [plural] a group of people who are not permanently in the armed forces but are used only if needed: They will call up the reserves.Parts of armies and groups of servicemen
(Definition of reserve noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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