skid
  Pronunciation: (skid), [key]    — n., v., skid•ded, skid•ding. 
  
 
—n. - a plank, bar, log, or the like, esp. one of a pair, on which something heavy may be slid or rolled along.  
- one of a number of such logs or timbers forming a skidway.  
- a low mobile platform on which goods are placed for ease in handling, moving, etc. Cf.  
- a plank, log, low platform, etc., on or by which a load is supported.  
-   
 -  any of a number of parallel beams or timbers fixed in place as a raised support for boats, spars, etc. 
-  any of a number of timbers on which a heavy object is placed to be shoved along on rollers or slid. 
-  an arrangement of planks serving as a runway for cargo. 
-  an arrangement of planks serving as a fender to protect the side of a vessel during transfer of cargo. 
-  sidewise motion of a vessel; leeway. 
- a shoe or some other choke or drag for preventing the wheel of a vehicle from rotating, as when descending a hill.  
- a runner on the under part of some airplanes, enabling the aircraft to slide along the ground when landing.  
- an unexpected or uncontrollable sliding on a smooth surface by something not rotating, esp. an oblique or wavering veering by a vehicle or its tires: The bus went into a skid on the icy road. 
- in the process of decline or deterioration: His career is on the skids. 
- to bring about the downfall of; cause to fail: Lack of money put the skids under our plans. 
- the downward path to ruin, poverty, or depravity: After losing his job he began to hit the skids. 
 
—v.t. - to place on or slide along a skid.  
- to check the motion of with a skid: She skidded her skates to a stop. 
- to cause to go into a skid: to skid the car into a turn. 
 
—v.i. - to slide along without rotating, as a wheel to which a brake has been applied.  
- to slip or slide sideways, as an automobile in turning a corner rapidly.  
- to slide forward under the force of momentum after forward motion has been braked, as a vehicle.  
- (of an airplane when not banked sufficiently) to slide sideways, away from the center of the curve described in turning. Cf. (def. 15).  
 
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.