三线 sānxiàn third line Origin Definitions Defs Strokes Stroke Words Sentences Sents sānxiàn third line · Third Front 三 sān numeral three the number three; 3线 線 xiàn noun boundary boundary; demarcation line; frontline; verge; brinksānxiàn retired cadres 三 sān numeral three the number three; 3线 線 xiàn nounverb political line (political) line; a person's position or role in a specific field of work (e.g. frontline)