螺絲帽 (lo4 si1 mou2) — a nut (for a screw, bolt) in Cantoneseloˎ₄螺siˉ¹絲mouˊ²帽简 螺丝帽Mandarin Pinyin: luo2 si1 mao4Meaning of 螺絲帽nouna nut (for a screw, bolt)