designating or of a rudimentary bony process on the shoulder blade in mammals, or a bone in monotremes and certain fossil reptiles that extends from the shoulder blade to the breastbone
noun
this bony process or bone
See coracoid in American Heritage Dictionary 4
(kôrˈə-koidˌ, kŏrˈ-)
noun
A bony process projecting from the scapula toward the sternum in mammals.
A beak-shaped bone articulating with the scapula and sternum in most lower vertebrates, such as birds and reptiles.