cohort: Meaning and Definition of

co•hort

1. a group or company: She has a cohort of admirers.
2. a companion or associate.
3. one of the ten divisions in an ancient Roman legion, numbering from 300 to 600 soldiers.
4. any group of soldiers or warriors.
5. an accomplice; abettor: He got off with probation, but his cohorts got ten years apiece.
6. a group of persons sharing a particular statistical or demographic characteristic: the cohort of all children born in 1980.
7. an individual in a population of the same species.