英和和英

語源

soap +‎ nut

名詞

soapnut (複数形 soapnuts)

1. The drupe of Sapindus plants, containing saponins, which are a natural surfactant.
   • 2015, Beth Terry, Plastic-Free: How I Kicked the Plastic Habit and How You Can Too‎^[1], Simon and Schuster, →ISBN:

     Soapnuts are the dried fruit of a tree called Sapindus mukorossi (Chinese Soapberry) and contain saponin, a natural surfactant that foams just like soap.