1. (adj.)gray of a color between white and black; having a neutral hue.
2. gray dark or gloomy: gray skies.
3. gray dull or monotonous.
4. gray having gray hair.
5. gray pertaining to old age; elderly: gray households.
6. gray indeterminate and intermediate in character: the gray area between realism and abstraction.
7. (n.)gray any achromatic color; any color intermediate between white and black.
8. gray something of this color.
9. gray gray material or clothing: to dress in gray.
10. gray an unbleached and undyed condition.
11. gray (often cap.) a member of the Confederate army in the American Civil War, or the army itself.
12. gray a horse of a gray color.
13. (v.i.)gray to make or become gray.
14. (n.)Gray Asa, 1810–88, U.S. botanist.
15. Gray Thomas, 1716–71, English poet.
Definition of 'Gray'
Princeton's WordNet
1. (noun)gray, grayness, grey, greyness a neutral achromatic color midway between white and black
2. (noun)grey, gray clothing that is a grey color "he was dressed in grey"
3. (noun)grey, gray any organization or party whose uniforms or badges are grey "the Confederate army was a vast grey"
4. (noun)grey, gray horse of a light gray or whitish color
5. (noun)gray, Gy the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad
6. (noun)Gray, Louis Harold Gray English radiobiologist in whose honor the gray (the SI unit of energy for the absorbed dose of radiation) was named (1905-1965)
7. (noun)Gray, Thomas Gray English poet best known for his elegy written in a country churchyard (1716-1771)
8. (noun)Gray, Robert Gray American navigator who twice circumnavigated the globe and who discovered the Columbia River (1755-1806)
9. (adj)Gray, Asa Gray United States botanist who specialized in North American flora and who was an early supporter of Darwin's theories of evolution (1810-1888)
10. (adj)grey, gray, greyish, grayish of an achromatic color of any lightnessintermediate between the extremes of white and black "the little grey cells"; "gray flannel suit"; "a man with greyish hair"
11. (adj)grey, gray, grey-haired, gray-haired, grey-headed, gray-headed, grizzly, hoar, hoary, white-haired showing characteristics of age, especially having grey or whitehair "whose beard with age is hoar"-Coleridge; "nodded his hoary head"
12. (adj)grey, gray used to signify the Confederate forces in the American Civil War (who wore grey uniforms) "a stalwart grey figure"
3. Gray white mixed with black, as the color of pepper and salt, or of ashes, or of hair whitened by age; sometimes, a dark mixed color; as, the soft gray eye of a dove
4. Gray gray-haired; gray-headed; of a gray color; hoary
Definitions of Gray 
