copal
/ˈkəʊpəl/noun
mass noun
1- resin from any of a number of tropical trees, used to make varnish树脂。
1.1
- The resin is obtained from trees in the families Leguminosae (genera Guibourtia, Copaifera, and Trachylobium) and Araucariaceae (genus Agathis)该树脂提取于豆科植物（古夷苏木属, 柯柏胶树属和粗裂叶木属）和南洋杉科植物（贝壳杉属）。
词源
late 16th cent.: via Spanish from Nahuatl copalli 'incense'.