skid

n.

  1. 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; a drag; a skidpan; also, by extension, a hook attached to a chain, and used for the same purpose.
  2. A piece of timber used as a support, or to receive pressure.
  3. Large fenders hung over a vessel's side to protect it in handling a cargo.
  4. One of a pair of timbers or bars, usually arranged so as to form an inclined plane, as form a wagon to a door, along which anything is moved by sliding or rolling.
  5. One of a pair of horizontal rails or timbers for supporting anything, as a boat, a barrel, etc.

v. t.

  1. To protect or support with a skid or skids; also, to cause to move on skids.
  2. To check with a skid, as wagon wheels.