From The Collaborative International Dictionary of English v.0.48:
Slat \Slat\, n. [CF. Slot a bar.] A thin, narrow strip or bar of wood or metal; as, the slats of a window blind. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Slat \Slat\, v. t. [imp. & p. p. Slatted; p. pr. & vb. n. Slatting.] [OE. slatten; cf. Icel. sletta to slap, to dab.] 1. To slap; to strike; to beat; to throw down violently. [Prov. Eng. & Colloq. U.S.] [1913 Webster]
How did you kill him? Slat[t]ed his brains out. --Marston. [1913 Webster]
2. To split; to crack. [Prov. Eng.] --Halliwell. [1913 Webster]
3. To set on; to incite. See 3d Slate. [Prov. Eng.] [1913 Webster]