A kickstand is a device on a bicycle or motorcycle that allows the bike to be kept upright without leaning against another object or the aid of a person.
A kickstand is usually a piece of metal that flips down from the frame and makes contact with the ground.
A center stand kickstand is a pair of legs or a bracket that flips straight down and lifts the rear wheel off the ground when in use.
Center stands can be mounted to the chain stays right behind the bottom bracket or to the rear dropouts.
Center stands are found on most "standard" and "touring" motorcycles, but are omitted on most high-performance sportbikes to save weight and increase ground clearance.