What is the meaning of Waterfall?

A flow of water over the edge of a cliff.

A waterfall-like outpouring of liquid, smoke, etc.

Short for waterfall model.

The action of drinking from a vessel without touching it with the lips, considered more sanitary for a shared vessel.

A necktie.

A chignon (hairstyle).

A beard.

A kind of handstand with chin tucked and back arched.

To fall like a waterfall.

To drink (something) from a container by pouring it from a height so as not to touch one's lips to the rim.

Synonym of recycle

Source: wiktionary.org