资料来源 : pyDict

灰色,本色

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Grayness \Gray"ness\, n.
   The quality of being gray.

资料来源 : WordNet®

grayness
     n : a neutral achromatic color midway between white and black
         [syn: {gray}, {grey}, {greyness}]