- The definition of a waterfall is a steep cliff or incline down which water cascades.
Niagara Falls is an example of a waterfall.
Niagara Falls is a famous waterfall.
waterfall definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a steep fall of water, as of a stream, from a height; cascade
waterfall definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A steep descent of water from a height; a cascade.
waterfall - Medical Definition
Blood flow in vascular beds where lateral pressure greatly exceeds venous pressure and tends to collapse vessels.