螺丝母 Traditional 螺絲母 luó sī mǔ 🔊 nut (female component of nut and bolt) + Keep this word Meanings luó sī mǔ 螺絲母 nut (female component of nut and bolt) Its characters 螺luóspiral shell丝sīsilkHSK 7–9母mǔmotherHSK 6