Definition of grey
- grey Adjective Having a grey colour, as the ash of an ember.
- grey Adjective dreary, gloomy
- grey Adjective Having an indistinct or disputed quality
- grey Verb To become grey or cause to become grey.
- grey Noun An achromatic colour intermediate between black and white.
- grey Noun an extraterrestrial creature with greyish skin, bulbous black eyes, and an enlarged head.