coul.ter
n.（名词）A blade or wheel attached to the beam of a plow that makes vertical cuts in the soil in advance of the plowshare.犁刀：附在犁辕上的刀或圆轮，用来纵切犁的铧头前的土地
来源：Middle English culter 中古英语 culter from Old English culter 源自 古英语 culter Old French coltre 古法语 coltre both from Latin culter [knife, plowshare] * see skel- 都源自 拉丁语 culter [刀，犁头] *参见 skel-
