Definitions
1.nounA substance or preparation for rendering cloth, leather, etc., impervious to water.
2.nounCloth made waterproof, or any article made of such cloth, or of other waterproof material, as rubber; especially, an outer garment made of such material.
3.verbTo make waterproof or water-resistant.
4.adjectiveUnaffected by water.
5.adjectiveMade of or covered with material that doesn't allow water in.
6.adjectiveIncapable of failing; unassailable.