Adj.1.slate-grey- of the color of slate or granite; "the slaty sky of dawn" slate-gray,slatey,slaty,slaty-gray,slaty-grey,stone-gray,stone-grey achromatic,neutral- having no hue; "neutral colors like black or white" Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Prin...