ULNA

Source: 567

‖Ul″na (ŭl″nȧ), n. [[L., the elbow. See Ell.]] 1. 1. (Anat.) The postaxial bone of the forearm, or brachium, corresponding to the fibula of the hind limb. See Radius.
2. 2. (O. Eng. Law) An ell; also, a yard. Burrill.