A metal rod attached to a bicycle or motorcycle, lying horizontally when not in use, that may be kicked into a vertical position to support the vehicle when it is stationary
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 wheeled vehicle that has two wheels and is moved by foot pedals
In graph theory, a pseudoforest is an undirected graphThe kind of undirected graph considered here is often called a multigraph or pseudograph, to distinguish it from a simple graph. in which every connected component has at most one cycle.
ride a bicycle
A vehicle composed of two wheels held in a frame one behind the other, propelled by pedals and steered with handlebars attached to the front wheel