What is the meaning of Grei?

association, society (group of people)

parish (members of a church's congregation)

group of vassals or subjects

nation

straight, easy

clear, plain, obvious, straightforward

nice, kind, good, good-natured

simple, easy; straightforward

practical; useful, good; OK

nice, kind

imperative of greia

alternative form of grǣġ

a horse

a male horse

small flock of livestock

association; society (group of people)

parish (members of a church's congregation)

group of vassals or subjects

a people

nominative/accusative/genitive/dative indefinite masculine plural of greu

Source: wiktionary.org