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.(adjective)
source: webster1913
noun (n)
a neutral achromatic color midway between white and black(noun.attribute)
any organization or party whose uniforms or badges are grey(noun.group)
source: wordnet30
horse of a light gray or whitish color(noun.animal)
source: wordnet30
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(noun.quantity)
United States botanist who specialized in North American flora and who was an early supporter of Darwin's theories of evolution (1810-1888)(noun.person)