Elbow

The joint or bend of the arm; the outer curve in the middle of the arm when bent.

Any turn or bend like that of the elbow, in a wall, building, and the like; a sudden turn in a line of coast or course of a river; also, an angular or jointed part of any structure, as the raised arm of a chair or sofa, or a short pipe fitting, turning at an angle or bent.

A sharp angle in any surface of wainscoting or other woodwork; the upright sides which flank any paneled work, as the sides of windows, where the jamb makes an elbow with the window back.

To push or hit with the elbow, as when one pushes by another.

To jut into an angle; to project or to bend after the manner of an elbow.

To push rudely along; to elbow one's way.

the joint of a mammal or bird that corresponds to the human elbow

hinge joint between the forearm and upper arm and the corresponding joint in the forelimb of a quadruped

shove one's elbow into another person's ribs