jaw, chin
あごが痛い。
My jaw hurts.
彼のあごを殴ってやった。
I punched him in the jaw.
右からまたあごに一発
Another shot to the chin from the right.
— マルコムX (1992)
彼のあごから彼が父親似である事が分かる。
You can tell from his chin that he takes after his father.
あごにパンチを受けて私はひざをついた。
I took a punch to the chin and dropped to my knees.