waterproof

nouns

any fabric impervious to water
is a type of (narrower)
artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
"the fabric in the curtains was light and semitransparent"; "woven cloth originated in Mesopotamia around 5000 BC"; "she measured off enough material for a dress"
a water-resistant coat

verbs

make watertight
"Waterproof the coat"
is derived from
is a type of (narrower)
make tight; secure against leakage
"seal the windows"

adjectives

not permitting the passage of water