skid

1. An out-of-control sliding motion as would result from applying the brakes too hard in a car or other vehicle. · Near-synonyms: wheelslide, sideslip· Just before hitting the guardrail the driver regained control and pulled out of the skid.
2. A shoe or clog, as of iron, attached to a chain, and placed under the wheel of a wagon to prevent its turning when descending a steep hill.
3. A hook attached to a chain, used for the same purpose.
4. A piece of timber or other material used as a support, or to receive pressure.
5. A runner of a sled. · In the hours before daylight he sharpened the skids and tightened the lashings to prepare for the long dogsled journey.
6. A ski-shaped runner or supporting surface as found on a helicopter or other aircraft in place of wheels. · Due to frequent arctic travel, the plane was equipped with long skids for snow and ice landings.
7. A basic platform for the storage and transport of goods, machinery or equipment, later developed into the pallet. · He unloaded six skids of boxes from the truck.
8. A pallet.

Plural skids