The Collaborative International Dictionary of English v.0.48:

Skirting \Skirt"ing\, n.
   1. (Arch.) A skirting board. [R.]
      [1913 Webster]

   2. Skirts, taken collectivelly; material for skirts.
      [1913 Webster]

   Skirting board, the board running around a room on the wall
      next the floor; baseboard.
      [1913 Webster]

WordNet (r) 3.0 (2006):

skirting board
    n 1: a molding covering the joint formed by a wall and the floor
         [syn: baseboard, mopboard, skirting board]