This is the 8422nd most frequent Dutch word.
grijze
"Grijze" means "gray" or "grey" in English, referring to the color.
In this sentence, 'grijze' is again an adjective describing the noun 'lucht' (sky) and indicates its color.
We zagen een grijze lucht boven de stad.
We saw a gray sky above the city.
Here, 'grijze' qualifies the noun 'haren' (hairs) in its plural form, denoting the color of her hairs.
Haar grijze haren verraden haar leeftijd.
Her gray hair reveals her age.
The word 'grijze' is used as an adjective describing the color of the noun 'kat' (cat), and it agrees in gender and number with the noun.