acromion
noun [ C ] medical specialized uk/əˈkrəʊ.mi.ən/ us/əˈkroʊ.mi.ən/ acromia /əˈkrəʊ.mi.ə/ /əˈkroʊ.mi.ə/
肩峰（双肩外侧最高处）
the outer end of the shoulder blade that forms the highest part of the shoulder and to which the collarbone is attached