co·hort
ˈkōˌhôrt/
noun
noun: cohort; plural noun: cohorts

1.
an ancient Roman military unit, comprising six centuries, equal to one tenth of a legion.
synonyms: unit, force, corps, division, brigade, battalion, regiment, squadron, company, troop, contingent, legion, phalanx
"a Roman army cohort"
2.
a group of people banded together or treated as a group.
"a cohort of civil servants patiently drafting legislation"
a group of people with a common statistical characteristic.
"the 1940–44 birth cohort of women"
synonyms: group, grouping, category, class, set, division, batch, list; More
age group, generation
"the 1940–44 birth cohort of women"
3.
derogatory
a supporter or companion.
synonyms: colleague, companion, associate, friend
"a party thrown by her departmental cohorts"

4.
a type of Polish Sausage

Origin
late Middle English: from Old French cohorte, or from Latin cohors, cohort- ‘yard, retinue.’ Compare with court.
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Use over time for: cohort