The Collaborative International Dictionary
Cinereous
Cinereous \Ci*ne"re*ous\, a. [L. cinereus, fr. cinis ashes.] Like ashes; ash-colored; grayish.
Wiktionary
cinereous
a. 1 Of an ash-gray colour. 2 Like ashes. 3 Containing ashes. n. An ash-gray colour.
Wikipedia
Usage examples of "cinereous".
The place did not even justify its name, for it was a cinereous wreck.
The rain came in increasing force, seething over the cinereous thickets.
Blood splashed cinereous fur, and not all of it was theirs, for their teeth were like razors, and he could not keep them all from him.