公安部門 gōng'ānbùmén public security sector Origin Definitions Defs Strokes Stroke Words Sentences Sents 公安 gōng'ān public security organs The public security system or government department in Mainland China responsible for policing such as the 公安部 gōng'ānbù or 公安局 gōng'ānjú.部门 部門 bùmén noun department department; branch; section; a unit or division within a larger organization based on administrative or professional function