Dull and dirty in colour; discoloured; (also) designating such a colour. Also in figurative contexts. Now rare.

Wrongly or badly coloured; discoloured. Also figurative: erroneous, misrepresented.

Of a (disagreeably) dark and dull colour, or having a dirty or gloomy appearance; devoid of or lacking in brightness or freshness of colour or hue…

Having lost purity or lustre, faded; also figurative sullied, dishonoured.

That has been made dirty or of a (disagreeably) dark or dull colour, esp. with smoke, grime, etc.; dingy, dull, discoloured. Now chiefly as the…