An iron wedge used to bore through stones.
单词 | θ212285 |
释义 | society > occupation and work > equipment > piercing or boring tools > [noun] > boring tool > other boring tools (4) piel1808 An iron wedge used to bore through stones. rounder1839 Mining. A tool used to round off a hole in boring. Now rare. French bit1875 †(a) Horse Riding a type of snaffle with three joints, the middle joint being flat and the two side joints (attaching to the cheekpieces) rounded (obs… German bit1875 a tool for boring or drilling (see quot. 1875). |
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