sled

A sled is a small, light vehicle with runners that is usually used by children to slide down snow-covered hills. (A "sled" in this sense is not pulled by an animal as a "sleigh" is.)

Example: The child zoomed down the hill on his sled.

A sled is a vehicle on runners that is used to transport loads over the snow or ice. (contrast "sleigh", which is larger)

A sled is a snowmobile.

To ride a sled.