人防 rénfáng civil air defense Definitions Defs Origin Strokes Stroke Words Sentences Sents 人 rén noun abbreviation of 人民 rénmín the people the citizens or people of a nation or region; those who belong to a society and have corresponding rights and duties防 fáng abbreviation of 防空 fángkōng air defense measures taken to defend against or reduce the effectiveness of an enemy air attack; antiaircraft defense