螺纹钢 luówéngāng rebar Origin Definitions Defs Strokes Stroke Words Sentences Sents 螺纹 螺紋 luówén screw thread The spiral ridge or groove on the surface of a screw, bolt, or inside a nut; also called 螺丝扣 luósīkòu.钢 鋼 gāng noun steel steel; an alloy of iron and carbon that is tougher than cast iron and harder than wrought iron