one of several divisions of a government, business, shop, university etc
section of organization, area
Cases of word usage
1) the government department in charge of public money (exchequer)
2) a government department (ministry)
3) room(s) used as a place of business; a government department (office)
4) (in GB) the government department controlling public revenue; (a place for) the funds of a society, organization etc (treasury)