ulna
nounThe bone extending from the elbow to the wrist on the side opposite to the thumb in humans.
nounA corresponding bone in the forelimb of other vertebrates.
nounThe inner one of the two bones of the forearm, between the elbow and the wrist, the other being the radius; the bone which makes a strict hinge-joint at the elbow with the humerus, and about which the radius revolves in pronation and supination, when the ulna reaches to the wrist and these movements are practicable.
nounIn entomology, the stigmatic or marginal vein of the fore wing.
nounA unit of length; a cubit; an ell.
nounIn ichthyology, the hypereoracoid.
nounThe postaxial bone of the forearm, or brachium, corresponding to the fibula of the hind limb. See
An ell; also, a yard.
nounThe
the inner and longer of the two bones of the human forearm