Elbow meaning : 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. A detective. Part of a basketball court located at the intersection of the free-throw line and the free-throw lane. A hit with the elbow. To push with the elbow. (by extension) To nudge, jostle or push.