- The definition of water resistant is something that will not be penetrated by liquid or destroyed by exposure to liquid but that will instead repel the liquid.
An example of a water resistant watch is one you can wear in the water while swimming without ruining it.
water-resistant 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.
that repels water for a short time but is not thoroughly waterproof
water-resistant definition by American Heritage Dictionary