1. showerproof - Adjective
2. showerproof - Verb
showerproof (comparative more showerproof, superlative most showerproof)
That does not absorb water during light rainfall.
showerproof (third-person singular simple present showerproofs, present participle showerproofing, simple past and past participle showerproofed)
(transitive) To make resistant to light rainfall.