From WordNet (r) 3.0 (2006):
gray
adj 1: of an achromatic color of any lightness intermediate
between the extremes of white and black; "the little grey
cells"; "gray flannel suit"; "a man with greyish hair"
[syn: grey, gray, greyish, grayish]
2: showing characteristics of age, especially having grey or
white hair; "whose beard with age is hoar"-Coleridge; "nodded
his hoary head" [syn: grey, gray, grey-haired, gray-
haired, grey-headed, gray-headed, grizzly, hoar,
hoary, white-haired]
3: used to signify the Confederate forces in the American Civil
War (who wore grey uniforms); "a stalwart grey figure" [syn:
grey, gray]
4: intermediate in character or position; "a grey area between
clearly legal and strictly illegal" [syn: grey, gray]
n 1: a neutral achromatic color midway between white and black
[syn: gray, grayness, grey, greyness]
2: clothing that is a grey color; "he was dressed in grey" [syn:
grey, gray]
3: any organization or party whose uniforms or badges are grey;
"the Confederate army was a vast grey" [syn: grey, gray]
4: horse of a light gray or whitish color [syn: grey, gray]
5: 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 [syn: gray,
Gy]
6: English radiobiologist in whose honor the gray (the SI unit
of energy for the absorbed dose of radiation) was named
(1905-1965) [syn: Gray, Louis Harold Gray]
7: English poet best known for his elegy written in a country
churchyard (1716-1771) [syn: Gray, Thomas Gray]
8: American navigator who twice circumnavigated the globe and
who discovered the Columbia River (1755-1806) [syn: Gray,
Robert Gray]
9: United States botanist who specialized in North American
flora and who was an early supporter of Darwin's theories of
evolution (1810-1888) [syn: Gray, Asa Gray]
v 1: make grey; "The painter decided to grey the sky" [syn:
grey, gray]
2: turn grey; "Her hair began to grey" [syn: grey, gray]