What is the meaning of Ulna?

The bone of the forearm that extends from the elbow to the wrist on the side opposite to the thumb, corresponding to the fibula of the hind limb. Also, the corresponding bone in the forelimb of any vertebrate.

ulna

ulna

cubit (unit of length)

ulna

ulna

elbow-bone, ulna

arm

a linear measure, cubit, ell

ulna

ulna

Source: wiktionary.org