Dictionary

The joint between the upper arm and the forearm.

(by extension) Any turn or bend like that of the elbow, in a wall, building, coastline, etc.; an angular or jointed part of any structure, such as the raised arm of a chair or sofa, or a short pipe fitting, turning at an angle or bent.

Example: the sides of windows, where the jamb makes an elbow with the window back

A detective.

Part of a basketball court located at the intersection of the free-throw line and the free-throw lane.

To push with the elbow.

Example: He elbowed his way through the crowd.

(by extension) To nudge, jostle or push.