glenoid cavity
Concise Oxford English Dictionary © 2008 Oxford University Press:
glenoid cavity /ˈgliːnɔɪd/ (also glenoid fossa)
▶noun Anatomy a shallow depression on a bone into which another bone fits to form a joint, especially that on the scapula into which the head of the humerus fits.
– origin C18: glenoid from Fr. glénoïde, from Gk glēnoeidēs, from glēnē ‘socket’.
'glenoid cavity' also found in these Oxford entries:

