from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Brownish-gray nerve tissue, especially of the brain and spinal cord, composed of nerve cell bodies and their dendrites and some supportive tissue.
- n. Informal Brains; intellect.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative spelling of grey matter.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons
Sorry, no etymologies found.