How to write 垸

垸 [yuàn] 1. In the lake areas of Hunan and Hubei provinces, it refers to the dikes built to block water, as well as to the area surrounded by the dikes. - Example: 垸子 (dyke), 堤垸 (dike area), 垸田 (fields within the dike). 2. It refers to a waterproof structure built around houses and fields in the areas along rivers and lakes in places like Hunan and Hubei (English: dyke). Commonly referred to as 垸子 (dyke). 3. To apply lacquer and gray to objects. 4. An ancient unit of weight and currency, similar to “锾.” 5. Verb: To repair a wall. As noted in "Shuowen Jiezi, Earth Section": "垸, to repair a wall." 6. Noun: A measure word, an ancient unit for calculating weight. In "Zhou Li, Records of Craftsmen, Metal Workers": "Makers of arrows have blades one inch long, encircled one inch, with ten of these weighing three 垸." Zheng Xuan's note indicates that "垸 is a name for measurement."