Definition of "olecranon" []

• The large process on the upper end of the ulna that projects behind the elbow joint and forms the point of the elbow. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "—The olecranon is a large, thick, curved eminence, situated at the upper and back part of the ulna."
• "Zumaya fractured his right olecranon, which is the bony tip of the elbow right under the skin."
• "The official diagnosis is a fractured right olecranon, which is the bony tip of the elbow right under the skin."