刨槽 meaning in English

dadoing
plow

I think it ' s in qing dynasty , yet . qing mace with copper swallowing orifice is not little . the technical level on the mace ' s body is far from that in ming dynasty . so is the copper wrapped slurry . this isn ' t actural combatting ware , but like the thing for oblation or wushu
还是看清,清锏带铜皮如意吞口的不在少数,锏身钩线刨槽的手法与明物有距离,铜色包浆也不到明,此物非实战器,似是练武或供奉之物