kerf
n.（名词）A groove or notch made by a cutting tool, such as a saw or an ax.锯缝，劈痕：切割型工具如锯或斧子所制造的沟槽或凹口The width of a groove made by a cutting tool.锯面，切面：切割性工具所切出的沟槽的宽度
来源：Middle English 中古英语 from Old English cyrf [a cutting] * see gerbh- 源自 古英语 cyrf [切口] *参见 gerbh-
