(slat) noun
1. One of a number of thin, flat, narrow strips of wood used to support the springs or mattress of a bed.
2. Any thin, narrow strip of wood or metal; a lath.
3. Aeron. A movable auxiliary airfoil attached to the leading edge of an airplane wing.
—v.t. slat·ted, slat·ting To provide or make with slats. [<OF esclat splinter, chip]

(slat) v. slat·ted, slat·ting v.t. Dial.
1. To throw or dash violently; fling carelessly.
2. To beat; slap.
—v.i.
3. To flap, as sails against yards.
—noun Dial. A sudden, sharp blow. [? <ON sletta slap]