Read Edit View history 滚刀 gǔndāo gear hob Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 滚刀/滾刀 · gǔndāo · gear hob 2026/03/04 滚刀 / 滾刀 gǔndāo gear hob (engineering) gear hob (cutting tool used in manufacturing gears) 他在检查滚刀的磨损情况。 noun created sense Mar 4, 2026, 02:25 AM