帐房;会计室
Countinghouse \Count"ing*house`\ (kount"?ng-hous`), Countingroom \Count"ing*room`\ (kount"?ng-r??m`), n. [See {Count}, v.] The house or room in which a merchant, trader, or manufacturer keeps his books and transacts business.
countinghouse n : office used by the accountants of a business