Waterproof

1. v. t. To render impervious to water, as cloth, leather, etc.
2. a. Proof against penetration or permeation by water; impervious to water; as, a waterproof garment; a waterproof roof.
3. n. A substance or preparation for rendering cloth, leather, etc., impervious to water.
4. n. Cloth made waterproof, or any article made of such cloth, or of other waterproof material, as rubber; esp., an outer garment made of such material.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.