基本解释n. 翼螺帽；蝶形螺母同根派生 thumbnut相关词词组短语短語Thumbnut & Bolt 螺母和螺栓thumbnut更多词组英英字典柯林斯英英字典 a nut with projections enabling it to be turned by the thumb and forefinger wing nut thumbnut剑桥字典thumbnut柯林斯字典专业释义機械工程翼螺帽