What is the meaning of Toboggan?

A long sled without runners, with the front end curled upwards, which may be pulled across snow by a cord or used to coast down hills.

A similar sled of wood, pulled by dogs, possibly with steel runners, made to transport cargo.

Something which, once it starts going (figuratively) downhill, is unstoppable until it reaches the bottom.

A knit cap, designed to provide warmth in cold weather.

To slide down a hill on a toboggan or other object.

To go downhill unstoppably until one reaches the bottom.

To fly sharply downward so as to build up speed to facilitate in-flight refueling of a faster aircraft.

slide (in a playground)

Source: wiktionary.org