a tool for making holes in wood, that looks like a large corkscrew 木螺钻，螺旋钻（用于木材钻孔） a tool like a large auger, used for making holes in the ground 木螺钻，螺旋钻（用于木材钻孔）
Word OriginOld English nafogār, from nafu (of Germanic origin) + gār ‘piercer’. The n was lost by wrong division of a nauger; compare with adder and apron.