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English definition of “waterproof”

waterproof

adjective uk   /ˈwɔː.tə.pruːf/ us    /ˈwɑː.t̬ɚ-/
B2 not allowing water to go through: Canvas boots are all right but they're not as waterproof as leather.

waterproof

verb [T] uk   /ˈwɔː.tə.pruːf/ us    /ˈwɑː.t̬ɚ-/
to put a special substance on the surface of something that will prevent water from going through it

waterproof

noun [C] uk   /ˈwɔː.tə.pruːf/ us    /ˈwɑː.t̬ɚ-/ mainly UK
a coat or other piece of clothing that keeps you dry because it does not allow water in
(Definition of waterproof from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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