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- pronunciation:
- greI
mae
t
 r
| part of speech: |
noun |
| definition 1: |
the grayish nerve tissue of the brain and spinal cord, consisting largely of nerve cells and fibers. (Cf. white matter.)
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| definition 2: |
(informal) one's intellect; brains.
He's nice, but he doesn't have much gray matter. |
| related words: |
head, intellect, intelligence, mentality, mind |
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