from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The bone extending from the elbow to the wrist on the side opposite to the thumb in humans.
- n. A corresponding bone in the forelimb of other vertebrates.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
from the GNU version of the Collaborative International Dictionary of English
- n. The postaxial bone of the forearm, or brachium, corresponding to the fibula of the hind limb. See radius.
- n. An ell; also, a yard.
from The Century Dictionary and Cyclopedia
- n. The 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.
- n. In entomology, the stigmatic or marginal vein of the fore wing.
- n. A unit of length; a cubit; an ell.
- n. In ichthyology, the hypereoracoid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the inner and longer of the two bones of the human forearm
Latin, elbow, forearm.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin ulna ("elbow"). (Wiktionary)