acromion

from WordNet (r) 3.0 (2006)

acromion
    n 1: the outermost point of the spine of the shoulder blade
         [syn: {acromion}, {acromial process}]

from The Collaborative International Dictionary of English v.0.48

Acromion \A*cro"mi*on\, n. [Gr. ?; 'a`kros extreme + ? shoulder:
   cf. F. acromion.] (Anat.)
   The outer extremity of the shoulder blade.
   [1913 Webster]