scooter

Concise Oxford English Dictionary © 2008 Oxford University Press:
scooter/ˈskuːtə(r)/

▶noun

• 1 (also motor scooter) a light two-wheeled motorcycle.

• 2 any small light vehicle able to travel quickly across water or snow.

• 3 a child's toy consisting of a footboard mounted on two wheels and a long steering handle, propelled by pushing one foot against the ground.

▶verb travel or ride on a scooter.

– derivatives
scooterist noun.