say it: IN-fuhn-tree
infantry is a noun meaning "an army unit consisting of soldiers who fight on foot". It carries one recorded sense.
an army unit consisting of soldiers who fight on foot
“there came ten thousand horsemen and as many fully-armed foot”
military
Forms marked are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for infantry come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.