人丁 Traditional form: 人丁 Pinyin (reading): réndīng Definitions: number of people in a family population (old) adult males male servants Characters: 人 - man, person; people 丁 - male adult; robust, vigorous; 4th heavenly stem Traditional characters: 人 - man, person; people 丁 - male adult; robust, vigorous; 4th heavenly stem