glenoid

Together these cartilaginous extensions of the tendon are termed the 'glenoid labrum'.

Glenoid cavity (more common)

Glenoid fossa can refer to:

The Glenoid Cavity is also the point of origin for the muscle: Triceps Brachii.

The lateral or glenoid angle is broad and bears the glenoid cavity or fossa, which is directed forward, laterally and slightly upwards.

A SLAP tear or SLAP lesion is an injury to the Glenoid labrum (fibrocartilaginous rim attached around the margin of the glenoid cavity).