† ˈslatty,a.Obs. [f. slat n.1 + -y.] Slaty. 1661J. Childrey Brit. Baconica 74 In a Clayie and slatty Countrey.1686Plot Staffordsh. 120 They have harder, stony, slatty sorts of Marles.1758Borlase Nat.Hist.Cornw. 59 The black and gritty, the shelfy slatty Soil, and the stiff reddish Soil.