Definition of glaucous:
(adj) :
of a pale
green colour with a bluish-grey tinge, especially when covered with a powdery residue
"1955, I realised I was the only shopper in that rather eerie place where I moved about fishlike, in a glaucous aquarium. -- Vladimir Nabokov, Lolita"
(n) :
a pale
green colour with a bluish-grey tinge