螺丝攻 luósīgōng screw tap Origin Definitions Defs Strokes Stroke Words Sentences Sents 螺丝 螺絲 luósī nut an internal screw thread or a nut攻 gōng to work on (literary) to work on material; to process; to polish or refine, as in the phrase 它山之石，可以攻玉 tāshānzhīshíkěyǐgōngyù