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English definition of “infantry”

infantry

noun [U, + sing/pl verb] uk   /ˈɪn.fən.tri/ us  
the part of an army that fights on foot: The infantry was/were sent into battle. It's a light/heavy infantry unit.
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Parts of armies and groups of servicemen
(Definition of infantry from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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