adjective
Of a colour between black and white, having neutral hue and intermediate brightness.
Dreary, gloomy, cloudy.
Of indistinct, disputed or uncertain quality or acceptability.
Gray-haired.
Old.
Relating to older people.
verb
(ergative) To turn gray.
(demography, slang) To turn progressively older, alluding to graying of hair through aging (used in context of the population of a geographic region)
(transitive, photography) To give a soft effect to (a photograph) by covering the negative while printing with a ground-glass plate.
noun
An achromatic colour between black and white.
An animal or thing of grey colour, such as a horse, badger, or salmon.
A gray wolf
A gray whale, Eschrichtius robustus.
(chiefly US, ufology) Synonym of grey alien.
(US, two-up) A penny with a tail on both sides, used for cheating.
noun
In the International System of Units, the derived unit of absorbed dose of radiation (radiation absorbed by a patient); one joule of energy absorbed per kilogram of the patient's mass.