Definition of 「瀞」:
1. Same as "浄" (pure, clear). According to "Shuowen Jiezi • Water section": “瀞 means pure and is without impurity. It derives from 'water' and has a tranquil sound.” Duan Yucai notes: “瀞 corresponds to the modern character for '浄'. The character '瀞' is an ancient form of the modern '浄', which can be termed as an ancient-modern character pair. It is rarely seen in ancient texts.” Example from "Shigu Wen • I Water": “When the water is calm, the path is also smooth.”
2. Noun. (Phonetic compound. Derived from 'water', with a sound component indicating 'conflict'. Original meaning: the moat of the '争门' (Zheng Gate) of the Northern City Gate of the State of Lu during the Spring and Autumn period).
3. Essentially the same meaning. Refers to the pond at the Northern City Gate (净门). — "Shuowen". Note: The Northern City Gate is called '净门', likely named after the clear pond water. The terms '鹿门', '争门', and '吏门' as mentioned in the Gongyang Zhuan (a Confucian text), are possibly derived from '争' (conflict).