mandible
/ˈmændɪbl/noun
1- Anatomy & Zoology the jaw or a jawbone, especially the lower jawbone in mammals and fishes【剖, 动】颌, 颚; 颚骨（尤指哺乳动物和鱼的下颌骨）。
1.1
- either of the upper and lower parts of a bird's beak（鸟）上喙; 下喙。
1.2
- either half of the crushing organ in an arthropod's mouthparts（节肢动物的）口器上部（或下部）。
派生词
mandibular
adjectivemandibulate
adjective词源
late Middle English: from Old French， or from late Latin mandibula, from mandere 'to chew'.