Definition of: skid

(skid) noun
1. One of a pair of timbers used to support a heavy tilting or rolling object, as a cask, boat, or cannon; also, a log used as a track in sliding heavy articles about, or forming an inclined plane to ease their descent.
2. In lumbering, one of several logs used to make a track on which other logs are slid or piled; also, one of the cross–logs of a skid road.
3. A shoe or drag on a wagon wheel.
4. Naut. A fender hung over a vessel's side to protect it from rubbing and scraping: usually in the plural.
5. Aeron. A runner in an airplane's landing gear.
6. The act of skidding; a side–slip.
7. A small frame or platform upon which merchandise is stacked to be moved about or temporarily stored.
—on the skids Slang Rapidly declining in prestige or power.
—v. skid·ded, skid·ding v.i.
1. To slide instead of revolving, as a wheel which does not rotate though the vehicle is in motion.
2. To slip sideways through inability to grip the road: said of wheels, and, by extension, of vehicles.
3. Aeron. To slide sideways away from the center of curvature when turning, by reason of insufficient banking.
—v.t.
4. To furnish with skids; put, drag, or haul on skids.
5. To brake or hold back with a skid. [? <ON skidh piece of wood]