下颌骨 xiàhégǔ lower jawbone Definitions Defs Origin Strokes Stroke Words Sentences Sents 下颌 下頜 xiàhé lower jaw the lower jaw or mandible; also called 下巴 xiàba or 下颚 xià'è骨 gǔ noun bone bone; the hard tissue that forms the skeleton of humans and vertebrate animals