名詞 mandible:

1. the jaw in vertebrates that is hinged to open the mouth
   同義詞：lower jaw, mandibula, mandibular bone, submaxilla, lower jawbone, jawbone, jowl

man.di.ble

n.（名詞）
The lower jaw of a vertebrate animal.
下頜骨：脊椎運動的下頜骨
Either the upper or lower part of the beak in birds.
喙：鳥類喙的上半部或下半部
Any of various mouth organs of invertebrates used for seizing and biting food, especially either of a pair of such organs in insects and other arthropods.
上顎：任一無脊椎動物用于啄咬食物的器官，尤指昆蟲或其它節(jié)肢動物的上顎或下顎

來源：
Middle English
中古英語
from Old French
源自 古法語
from Late Latin mandibula
源自 后期拉丁語 mandibula
from mandere [to chew]
源自 mandere [咀嚼]

【引伸】
mandib.ular