n. pl. in·fan·tries
1. The branch of an army made up of units trained to fight on foot.
2. Soldiers armed and trained to fight on foot: The general ordered his infantry to attack.
3. A unit, such as a regiment, of such soldiers: Company B of the 7th Infantry.
[French infanterie, from Old French, from Old Italian infanteria, from infante, youth, foot soldier, from Latin īnfāns, īnfant-, infant; see INFANT.]
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