SLAT

I. transitive verb (~ted; ~ting) Etymology: perhaps of Scandinavian origin; akin to Old Norse sletta to throw carelessly Date: circa 1587 strike , pummel , to hurl or throw smartly, II. noun Etymology: Middle English sclate, ~e ~e Date: 1764 a thin narrow flat strip especially of wood or metal, ribs, an auxiliary airfoil at the leading edge of the wing of an airplane, ~ adjective ~ted adjective III. transitive verb (~ted; ~ting) Date: 1886 to make or equip with ~s