扣儿 kòu'er knot Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 这根绳子打的扣儿真结，怎么解也解不开。 zhè gēn shéngzi dǎ de kòu'er zhēn jié, zěnme jiě yě jiě bù kāi. This knot is so tight that it can't be untied no matter what. Source: Dong Chinese Dictionary