American English

Definition of weatherproof adjective from the Oxford Advanced American Dictionary

 

weatherproof

 adjective
adjective
NAmE//ˈwɛðərˌpruf//
 
 
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that is not affected by weather; that protects someone or something from wind and rain The finished roof should be weatherproof for years. a weatherproof jacket
See the Oxford Advanced Learner's Dictionary entry: weatherproof