infantry

Từ điển Oxford Advanced Learner 8th

in·fan·try [infantry infantries] BrE [ˈɪnfəntri] NAmE [ˈɪnfəntri] noun countable singular or plural verb
soldiers who fight on foot
•infantry units
•The infantry was/were guarding the bridge.

Word Origin:
late 16th cent.: from French infanterie, from Italian infanteria, from infante ‘youth, infantryman’, from Latin infant- ‘unable to speak’, from in- ‘not’ fant- ‘speaking’ (from the verb fari).