1) Bicycle part 2) Bicycle support 3) Hog support 4) Motorcycle accessory 
a folding attachment used to park a bicycle upright. Usually mounts to frame near bottom bracket, sometimes near rear dropouts.
Discredited Olympic sport whose only known current practitioners are Rockettes. Also, discredited bicycle component best known for instilling a false sense of security. In this capacity, responsible for more scratched paint jobs and bent derailleurs than any other force known to mankind.
a device for supporting a bicycle or motorcycle when not in use, pivoted to the rear axle in such a way that it can be kicked down below the rear wheel.