カテキュー

noun

catechu; cachou

A vegetable extract rich in tannin, used in dyeing, tanning, and traditional medicine. The term is a technical loanword.

• カテキューは、かつて染せん料りょうやなめし剤ざいとして使つかわれた。

  Catechu was once used as a dye and tanning agent.