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rainproof

[reyn-proof] /ˈreɪnˌpruf/
adjective
1.
impervious to rain; keeping out or unaffected by rain:
a rainproof cover; a rainproof coat.
verb (used with object)
2.
to make rainproof.
Origin of rainproof
1825-1835
First recorded in 1825-35; rain + -proof
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for rainproof
Historical Examples
  • In this way he built a very comfortable and rainproof bower.

    An American Robinson Crusoe Samuel. B. Allison
  • The billets were comfortable and rainproof, making it an ideal place to stay.

  • A more suitable and rainproof roof could scarcely be designed.

  • Cravenette—Cloths treated and finished before weaving by an improved process which renders them rainproof.

    Textiles and Clothing Kate Heintz Watson
  • We hasten to the trusty car and are soon ensconced beneath its rainproof coverings.

    In Unfamiliar England Thomas Dowler Murphy
  • Really, it was quite a comfortable abode, cool and rainproof, especially after Bastin had built his hut in which to cook.

    When the World Shook H. Rider Haggard
  • An outer covering that is rainproof and non-absorbent avoids the absorption of water and the consequent increase of weight.

  • No one would cavil at that term as applied to Whitman—yet one must not forget the “rainproof coat.”

  • "Only we'd have to make them stone proof as well as rainproof," and at this remark there was a general smile.

    The Rover Boys on a Tour Arthur M. Winfield
  • Silk and woolen materials for umbrella making, raincoats, etc., are expected to be rainproof.

    Textiles

    William H. Dooley
British Dictionary definitions for rainproof

rainproof

/ˈreɪnˌpruːf/
adjective
1.
Also raintight. (of garments, materials, buildings, etc) impermeable to rainwater
verb
2.
(transitive) to make rainproof
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for rainproof
adj.

also rain-proof, 1788, from rain (n.) + proof (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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16
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