noun:an area in a stream or river where running water falls down from a high place (such as over the side of a cliff)
noun:a perpendicular or very steep descent of the 'water' of a stream
synonyms: cascade, cascade
Movie clips
Movie quotes
(..) And if that light gets too close, The black hole swallows it. Think of it like this. Imagine a black hole as a waterfall. Gravity is the river flowing toward the falls, And a beam of light -- the kayak. Upriver from the waterfall, the current is weak. The kayaker can paddle against it and get away. But closer to the waterfall, the current is stronger, And the kayaker struggles to escape. The edge of the waterfall is like the edge of a black hole. (..)
