Etymology
Advertisement

waterproof (adj.)

also water-proof, 1725, from water (n.1) + proof (n.). Noun meaning "garment of waterproof material" is from 1799. The verb is first recorded 1843. Related: Waterproofed; waterproofing.

updated on March 23, 2014

Advertisement
Advertisement
Definitions of waterproof from WordNet
1
waterproof (n.)
any fabric impervious to water;
waterproof (n.)
a water-resistant coat;
Synonyms: raincoat
2
waterproof (v.)
make watertight;
3
waterproof (adj.)
not permitting the passage of water;
Synonyms: rainproof / waterproofed
From wordnet.princeton.edu, not affiliated with etymonline.