knot [nɒt]

以下由轻松背单词网站提供

n.结，难题，一小群；vi.打结；vt. 把...打成结，系牢，捆扎

a join made by tying together the ends of a piece or pieces of string , rope , cloth ,

He made a knot in the rope. 他在绳子上打了个结。
The knot has come untied. 扣儿开了。