洞中肯綮 dòngzhòngkěnqìng to hit the nail on the head Origin Definitions Defs Strokes Stroke Words Sentences Sents 洞 dòng adjectivenoun thoroughly (bound form) thoroughly; penetratingly; clearly中 zhòng verbparticle to hit hit (a target); be hit or struck by (a bullet, illness, poison, etc.); fall into (a trap); win (a prize); pass (an exam); qualify肯綮 kěnqìng crux the critical juncture or key point of a matter