n. In anatomy, the olecranon; the upper end of the ulna; the elbow. See cut under forearm.n. In architecture, any projection designed to support a cornice or other structural feature, as a console or a corbel.n. Also written ancone.n. The name of a celebrated breed of sheep, originated in Massachusetts in 1791 from a ram having a long body and short, crooked legs, and therefore unable to leap fences. It was also known as the otter breed, and is now extinct.