How to write 桕

桕 [jiù] 名 1. 乌桕 (Chinese tallow tree): A deciduous tree with alternate leaves that are slightly rhombic, turning red in autumn. It has unisexual flowers on the same tree. The seeds are covered with a layer of white wax, used for making candles. The leaves can be used to produce black dye. The bark and leaves have medicinal properties, including detoxification and diuresis. 2. 桕脂 (tallowtree oil): The oil extracted from the seeds of the Chinese tallow tree. 3. 旧式门上合榫的槽 (groove): A groove used in traditional doors for joining. 引: “阶走枫林叶，窗催桕烛花。” — Song dynasty poet Murong Baicai. “两个正是推门入桕。” — From "Jing Shi Tong Yan".