Meaning of “grey” in the English Dictionary

"grey" in British English

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greyadjective

US usually gray uk /ɡreɪ/ us /ɡreɪ/

grey adjective (COLOUR)

A1 of the colour that is a mixture of black and white, the colour of rain clouds:

a grey sky

C2 having hair that has become grey or white, usually because of age:

He started to go/turn grey in his mid-forties.

B2 used to describe the weather when there are a lot of clouds and little light:

Night turned into morning, grey and cold.
greyness
noun [ U ] US usually grayness uk /ˈɡreɪ.nəs/ us /ˈɡreɪ.nəs/

greynoun [ C or U ]

US usually gray uk /ɡreɪ/ us /ɡreɪ/

greyverb [ I ]

US usually gray uk /ɡreɪ/ us /ɡreɪ/

(Definition of “grey” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"grey" in American English

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greyadjective

us /ɡreɪ/ esp. Cdn Br

gray

(Definition of “grey” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"grey" in Business English

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greyadjective [ before noun ]

UK US gray uk /ɡreɪ/ us

COMMERCE, ECONOMICS used to describe an unofficial but not illegal system in which products are bought in a foreign country and sold more cheaply than in the manufacturer's usual distribution system:

Compare

MARKETING used to describe people over about 50, considered as a group:

The grey generation are turning their backs on employment and starting their own businesses.

(Definition of “grey” from the Cambridge Business English Dictionary © Cambridge University Press)