1.NounA narrow, wooden or plastic platform mounted on pairs of wheels, on which one stands and propels oneself by pushing along the ground with one foot.
"She's been riding skateboards since she was eight years old."
2.NounA skateboard vehicle chassis: A chassis format, used for electric vehicles, which holds the drive motors and power energy store (i.e. batteries), forming the vehicular base; an instance of this format.
"A new crossover model will arrive next year and will be based on an existing skateboard."