As a Noun:
1. A small vehicle with two wheels, one in front and one in back connected by a flat board on which a child stands. It is guided by handle bars and propelled by pushing against the ground with one foot. English = scooter.
2. A narrow board with wheels at each end, which people stand on and ride for pleasure. English = skateboard.
3. The activity of riding on a skateboard. English = skateboarding.
As a Verb or Adjective:
1. To operate or ride a scooter.
2. To ride on a skateboard.