cohort

n. group, gang; one tenth of a legion; one of ten divisions of an ancient Roman legion; companion, friend; people with shared characteristics who experience the same happening concurrently; group of people who are approximately of the same age

Cohort may mean:In biology:Cohort (taxonomy), a taxonomic level for a group of allied orders or families of speciesCohort (ecology), a group of organisms of the same species and roughly similar agesCohort (computer science), a concept in computer scienceCohort (military unit), a component element of a Roman legionCohort (statistics), an age group in statistics, epidemiology, and economics, from which derivesCohort study, a form of longitudinal study used in medicine and social scienceCOHORT, abbreviation of Cohesion, Operational Readiness and Training. 1980s US Army project trying to increase cohesion in combat units.
See more at Wikipedia.org...

Noun
1. a company of companions or supporters
(hypernym) company
2. a band of warriors (originally a unit of a Roman Legion)
(hypernym) set, circle, band, lot
3. a group people having approximately the same age
(synonym) age group, age bracket
(hypernym) people
(hyponym) aged

n. cohort, group, gang; one tenth of a legion

(n.)
Any band or body of warriors.
  

(n.)
A natural group of orders of plants, less comprehensive than a class.
  

(n.)
A body of about five or six hundred soldiers; the tenth part of a legion.