Waterproofing

Waterproof Proof against penetration or permeation by water; impervious to water; as, a waterproof garment; a waterproof roof.
Source: Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.

Waterproof \Wa"ter*proof`\, n. 1. A substance or preparation for rendering cloth, leather, etc., impervious to water.
2. 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.
Source: Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.

Waterproof \Wa"ter*proof`\, v. t. To render impervious to water, as cloth, leather, etc.
Source: Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.

Waterproof adj : not permitting the passage of water [syn: rainproof, waterproofed] n
1: any fabric impervious to water
2: a water-resistant overcoat [syn: raincoat] v : make watertight; "Waterproof the coat"