| Noun | 1. | waterproof - any fabric impervious to watercloth, fabric, textile, material - artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers; "the fabric in the curtains was light and semitraqnsparent"; "woven cloth originated in Mesopotamia around 5000 BC"; "she measured off enough material for a dress" | |
| 2. | waterproof - a water-resistant coatBurberry - a lightweight belted gabardine raincoat with a distinctive tartan lining; name for the original manufacturer coat - an outer garment that has sleeves and covers the body from shoulder down; worn outdoors trench coat - a military style raincoat; belted with deep pockets | |
| Verb | 1. | waterproof - make watertight; "Waterproof the coat"seal off, seal - make tight; secure against leakage; "seal the windows" | |
| Adj. | 1. | waterproof - not permitting the passage of watertight - of such close construction as to be impermeable; "a tight roof"; "warm in our tight little house" | |