Where does “排水溝” come from?

排水溝 (Japanese) comes from Japanese 水, from Old Japanese 水, from Proto-Japonic *mentu — water.

排水溝 (Japanese): gutter, drainage ditch, culvert

Definitions

  1. gutter, drainage ditch, culvert

Ancestry of “排水溝”, step by step

排水溝 traces back through two separate lines of ancestry.

via Japanese 水

StepLanguageWordMeaning
1Japanese水water; drinking water; a fluid, liquid
2Old Japanese水water
3Proto-Japonic*mentuwater

via Japanese 溝

StepLanguageWordMeaning
1Japanese溝a ditch; a groove; a gulf; a gap
2Proto-Japonicminsə—
Every word from Proto-Japonic *mentu →Every word from Old Japanese 水 →Every word from Japanese 水 →