slat
noun
°A thin, narrow strip or bar of wood or metal; as, the slats of a window blind.
°(aeronautical) A moveable control surface at the leading edge of a wing that when moved, changes the chord line of the airfoil, affecting the angle of attack. Employed in conjunction with flaps to allow for a lower stall speed in the landing attitude, facilitating slow flight.
verb
°To construct or provide with at least one slat.