(of garments, materials, buildings, etc) impermeable to rainwater
verb
2. (transitive)
to make rainproof
rainproof in American English
(ˈreɪnˌpruf)
adjective
1.
not letting rain through; shedding rain
verb transitive
2.
to make rainproof
rainproof in American English
(ˈreinˌpruːf)
adjective
1.
impervious to rain; keeping out or unaffected by rain
a rainproof cover
a rainproof coat
transitive verb
2.
to make rainproof
Word origin
[1825–35; rain + -proof]This word is first recorded in the period 1825–35. Other words that entered Englishat around the same time include: breakdown, electrolyte, panda, runway, self-help-proof is a combining form meaning “resistant, impervious to” that specified by the initialelement. Other words that use the affix -proof include: burglarproof, childproof, waterproof
Examples of 'rainproof' in a sentence
rainproof
Top it (for the travelling bit) with a rainproof parka.
Times, Sunday Times (2007)
It smooths the hair down, takes away the frizz and makes it rainproof.
Times, Sunday Times (2014)
Pack rainproof ponchos and wellies for everyone.
The Sun (2017)
Its electric motor has enough rechargeable battery power for two rounds of golf, and it's fully rainproof.
Times, Sunday Times (2008)
But then, 'not strictly rainproof ' is another of this year's themes, by the looks of it.
Times, Sunday Times (2011)
Looking for something that's wind and rainproof but also has a pocket that will secure your gizmos?