Jawline
The lower edge of the face along the jaw, and its width measured between the two angles of the jaw.
Also: jaw width, bigonial width
The jawline is the line of the lower jaw, the mandible, from below the ears to the chin. Jaw width, measured between the two angles of the jaw, is one of the four face-shape measurements. A wide, angular jawline marks square and triangle faces; a narrow one marks heart and diamond faces. Beard styles are often chosen to follow, soften or square off the jawline, and barbers shape the cheek line and neckline around it.