radial nerve

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun anatomy A large nerve, carrying both sensory and motor neurones, that supplies the dorsal aspect of the forearm and arm

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun largest branch of the brachial plexus; extends down the humerus to the lateral epicondyle where it divides into one branch that goes to the skin on the back of the hand and another that goes to the underlying extensor muscles