(pos:名詞)(sim:戒指)(sim:螺絲帽)yue:同#螺絲 共用嘅固定用工具，外形就好似個圓圈咁，中間個窿內側有螺紋，可以畀大細相符嘅螺絲鑽入去之後扭實固定（量詞：粒）eng:nut (for screws), a kind of hardware