Semantics

Челюсть у неё сильно ныла. Her jaw ached badly.
Он с трудом разнял челюсти собаки. With some effort he managed to pry the dog's jaws apart.
This entry is concerned with the use of the word челюсть to refer to human and animal jaws. Common sense will dictate which of the expressions in this entry can or cannot be used to refer to animals or humans. The word челюсть is also used to refer to dentures, i.e. artificial sets of teeth.