界线 jièxiàn HSK7 boundary line Definitions Defs Origin Strokes Stroke Words Sentences Sents jièxiàn boundary line · borderline 界 jiè noun boundary (bound form) a boundary, border, or limit; a place where two areas meet线 線 xiàn noun boundary boundary; demarcation line; frontline; verge; brinkjièxiàn embroidery stitch 界 jiè noun boundary (bound form) a boundary, border, or limit; a place where two areas meet线 線 xiàn noun thread thread; string; wire; something long and thin like a thread; (bound form) made of cotton thread