1 [C] either of the two bones in your face that contain your teeth 颌: the lower/upper jaw 下╱上颌 ☞picture at body 见body插图

2 jaws [pl] the mouth (especially of a wild animal) 嘴（尤指野兽的）: The lion came towards him with its jaws open. 狮子张着嘴，朝他走来。

3 jaws [pl] the parts of a tool or machine that are used to hold things tightly （工具或机器）夹住东西的部份，钳口: the jaws of a vice 老虎钳口 ☞picture at vice 见vice插图