Word: 要害 (yàohài) 要害 dictionary entry yàohài vital part; key point; crucial Full dictionary entry for 要害 Example sentences using 要害 2 sentences, showing page 1 of 1. 头部是人体的要害。 Tóubù shì réntǐ de yàohài. The head is a vital part of the human body. 那一刀没有伤到他的要害。 Nà yì dāo méiyǒu shāng dào tā de yàohài. That blade did not hit any of his vital parts.