gambier
/ˈgæmbɪə(r)/noun
mass noun
1- an astringent extract of a tropical Asiatic plant, used in tanning黑儿茶, 棕儿茶（从亚洲热带植物中提取的收敛剂, 用于制革）。亦称CATECHU.
1.1
- The chief source of gambier is the climber Uncaria gambier, family Rubiaceae.黑儿茶的主要来源是攀缘植物儿茶钩藤, 茜草科。
词源
early 19th cent.: from Malay gambir, the name of the plant.