The olecranon is the pointy part of your elbow. It’s on the end of the ulna. If you stuck your elbow in clay, the olecranon would leave the biggest dent.

The olecranon — or olecranon process — is the part of your elbow that pokes out. The root of this word, the cranon (like cranium) comes from the Greek word for “skull or head” and indeed it’s like the head of your elbow. When you extend your arm, the olecranon can’t be seen. When you bend your arm, there the olecranon is again, ready to elbow someone out of the way.

Definitions of olecranon
  1. noun
    process of the ulna that forms the outer bump of the elbow and fits into the fossa of the humerus when the arm is extended
    synonyms: olecranon process
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    type of:
    appendage, outgrowth, process
    a natural prolongation or projection from a part of an organism either animal or plant
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