Source : Webster's Revised Unabridged Dictionary (1913)

Skidder \Skid"der\, n.
   One that skids; one that uses a skid; specif.: (Logging)
   (a) One that skids logs.
   (b) An engine for hauling the cable used in skidding logs.
   (c) The foreman of a construction gang making a skid road.

Source : WordNet®

skidder
     n 1: a person who slips or slides because of loss of traction
          [syn: {slider}, {slipper}]
     2: a worker who uses a skid to move logs
     3: a tractor used to haul logs over rough terrain