ul·na /ˈʌlnə/
  尺骨
  ul·na /ˈəlnə/ 名詞
  尺骨
  Ul·na n.
  1. Anat. The postaxial bone of the forearm, or brachium, corresponding to the fibula of the hind limb. See Radius.
  2. O. Eng. Law An ell; also, a yard.
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  ulna
       n : the inner and longer of the two bones of the human forearm
           [syn: elbow bone]
       [also: ulnae (pl)]