(archaic, derogatory) A printing office that employs workers for low wages so as to drive rivals out of business.

plural of chief financial officer

A uniquely addressable lockable box located on the premises of a post office that may be hired as collection point for mail. / (electricity) A test instrument once used by telephone engineers.

plural of post office box

plural of chief information officer

plural of chief operating officer

plural of dead letter office

plural of officer-involved shooting

plural of post-office box

plural of rat printing office