I. ˈ ̷ ̷| ̷ ̷ adjective
Etymology: rain (I) + proof
: impervious to rain
a rainproof bag
— compare showerproof , waterproof
II. noun
: a rainproof coat or cape
III. transitive verb
: to make rainproof
• rain·proof·er ˈrān|prüfə(r) noun
I. ˈ ̷ ̷| ̷ ̷ adjective
Etymology: rain (I) + proof
: impervious to rain
a rainproof bag
— compare showerproof , waterproof
II. noun
: a rainproof coat or cape
III. transitive verb
: to make rainproof
• rain·proof·er ˈrān|prüfə(r) noun
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012