say it: KOH-hawrt
cohort is a noun meaning "a company of companions or supporters". It carries 3 recorded senses.
a company of companions or supporters
a band of warriors (originally a unit of a Roman Legion)
a group of people having approximately the same age
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 cohort 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.