showerproof
adjective UK uk/ˈʃaʊə.pruːf/ us/ˈʃaʊ.ɚ.pruːf/ (US water-repellent)
（衣服或材料）防雨的
Showerproof clothing or material does not absorb water when it is raining lightly.
This coat isn't waterproof, but it is showerproof. 这件外套不防水，不过可以防小雨。