1.(Anat.) One of the whitish and elastic bundles of fibers, with the accompanying tissues, which transmit nervous impulses between nerve centers and various parts of the animal body. Note: An ordinary nerve is made up of several bundles of nerve fibers, each bundle inclosed in a special sheath (the perineurium) and all bound together in a connective tissue sheath and framework (the epineurium) containing blood vessels and lymphatics.
3.Physical force or steadiness; muscular power and control; constitutional vigor. "he led me on to mightiest deeds, Above the nerve of mortal arm."
4.Steadiness and firmness of mind; self-command in personal danger, or under suffering; unshaken courage and endurance; coolness; pluck; resolution.
5.Audacity; assurance. (Slang)
6.(Bot.) One of the principal fibrovascular bundles or ribs of a leaf, especially when these extend straight from the base or the midrib of the leaf.
7.(Zool.) One of the nervures, or veins, in the wings of insects.