Meaning of the word "upper jaw" in English

What does "upper jaw" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

upper jaw

US /ˈʌpər dʒɔː/
UK /ˈʌpə dʒɔː/

Noun

the upper part of the mouth, containing the upper teeth and palate

Example:
The dentist examined his patient's upper jaw.
He suffered a fracture in his upper jaw after the accident.