adjective, slat·i·er, slat·i·est.
Examples from the Web for slaty
By the way, Slaty, what do you make your nest of and where do you put it?The Burgess Bird Book for Children|Thornton W. Burgess
Josh Perrott made an offer at slashing the slaty face, checked his arm, and went on.A Child of the Jago|Arthur Morrison
Evans was wild again from the tee, his drive being sliced to the brook where he got a lie on the slaty bottom.News Writing|M. Lyle Spencer
The beds of this formation seldom exceed a foot in thickness, and are often very thin and slaty.
The aerial was there, towering as serenely against the slaty sky as though there was no such thing as a snowstorm.The Radio Boys at Mountain Pass|Allen Chapman