weatherproof

verbs

make resistant to bad weather

weatherproof

is a type of (narrower)

make resistant (to harm)

"proof the materials against shrinking in the dryer"

able to withstand exposure to weather without damage

"weatherproof electric wiring"; "a weatherproof coat"

weatherproof

is similar to

kept safe or defended from danger or injury or loss

"the most protected spot I could find"