What is the meaning of Gray?

Of a colour between black and white.

Dreary, gloomy.

Of an indistinct, disputed or uncertain quality.

Gray-haired.

Old.

Relating to older people.

To become gray.

To cause to become gray.

To turn progressively older, alluding to graying of hair through aging (used in context of the population of a geographic region)

To give a soft effect to (a photograph) by covering the negative while printing with a ground-glass plate.

An achromatic colour between black and white.

An animal or thing of grey colour, such as a horse, badger, or salmon.

A gray whale, Eschrichtius robustus.

Synonym of grey alien

A penny with a tail on both sides, used for cheating.

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. Symbol: Gy

gray (unit of absorbed radiation)

gray (SI unit)

gray (SI unit)

gray (SI unit of absorbed radiation)

gray (one of a race of evil, short extraterrestrial beings)

gray (SI unit)

Source: wiktionary.org