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Entry 4 senses · 3 variants Webster, 1913

Waterproof

/wôt'-ẽrp-ro͞ofˌ/ · Wa·ter·proof · IPA /ˈwɔt̬ɚˌpruf/
01 a. Proof against penetration or permeation by water; impervious to water; as, a waterproof garment; a waterproof roof.
  1. 1.
    Proof against penetration or permeation by water; impervious to water; as, a waterproof garment; a waterproof roof.
02 n. A substance or preparation for rendering cloth, leather, etc., impervious to water.
  1. 1.
    A substance or preparation for rendering cloth, leather, etc., impervious to water.
  2. 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.
03 v. t. To render impervious to water, as cloth, leather, etc.
  1. 1.
    To render impervious to water, as cloth, leather, etc.