Wiktionary
elbow bones
n. 1 (elbow bone lang=en nodot=1); ulnae, ulnas; olecranons. 2 The parts of both the ulna (forearm bone) and the humerus (upper arm bone) that make up the elbow joint.
Usage examples of "elbow bones".
The stuff came out of a plastic capsule which was fixed to the inner side of each elbow where it would feel, to the exploring hands of a searcher, like merely the firmness of one of the elbow bones.