Source : Webster's Revised Unabridged Dictionary (1913)

Slate \Slate\, v. t. [Cf. AS. sl[=ae]ting a privilege of
   hunting.]
   To set a dog upon; to bait; to slat. See 2d {Slat}, 3. [Prov.
   Eng. & Scot.] [Written also {slete}.] --Ray.