from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Brownish-gray nerve tissue, especially of the brain and spinal cord, composed of nerve cell bodies and their dendrites and some supportive tissue.
- noun Informal Brains; intellect.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Alternative spelling of
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons
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