むくろじ

  1. noun (common) (futsuumeishi)

    Indian soapberry (Sapindus mukorossi), Chinese soapberry, washnut, soapnut tree
    word usually written using kana alone

    • 羽子板で突く羽の玉は「むくろじ」という大木の種です。
      The feathered balls you hit with a battledore are the seeds of a large tree called 'soapberry'.