牙關緊閉 yáguānjǐnbì trismus Origin Definitions Defs Strokes Stroke Words Sentences Sents 牙关 牙關 yáguān jaw joint the mandibular joint; clenching of the teeth (often used metaphorically for determination or endurance, or medically, for lockjaw)紧闭 緊閉 jǐnbì verb to shut tightly to close securely or seal shut; to be tightly closed