n. 尺骨

[医] 尺骨

[ noun ]
the inner and longer of the two bones of the human forearm
<noun.body>

Ulna \Ul"na\, n. [L., the elbow. See {Ell}.]
1. (Anat.) The postaxial bone of the forearm, or branchium,
corresponding to the fibula of the hind limb. See
{Radius}.

2. (O. Eng. Law) An ell; also, a yard. --Burrill.