grey UK (US gray) /greɪ/ adjective
COLOUR › being a colour that is a mixture of black and white: grey clouds
HAIR › having hair that has become grey or white: She went grey in her thirties.
WEATHER › cloudy and not bright: a cold, grey morning
BORING › not interesting or attractive: Life was grey and tedious.
grey area › something which people are not certain about, usually because there are no clear rules for it