The Collaborative International Dictionary of English v.0.48:

Slate \Slate\, v. t. [imp. & p. p. Slated; p. pr. & vb. n.
   Slating.]
   1. To cover with slate, or with a substance resembling slate;
      as, to slate a roof; to slate a globe.
      [1913 Webster]

   2. To register (as on a slate and subject to revision), for
      an appointment. [Polit. Cant]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Slating \Slat"ing\, n.
   1. The act of covering with slate, slates, or a substance
      resembling slate; the work of a slater.
      [1913 Webster]

   2. Slates, collectively; also, material for slating.
      [1913 Webster]

WordNet (r) 3.0 (2006):

slating
    n 1: thin layers of rock used for roofing [syn: slate,
         slating]
    2: a severely critical attack; "the reviewers gave his book a
       sound slating"
    3: the act of laying slates for a roof