also: みずばな
noun
Refers to the boundary or edge of a body of water, such as a shore, bank, or waterfront area.
水端に立って遠くの船を眺めた。
I stood at the water's edge and gazed at the distant boats.
noun
Figurative use: the starting point of something, like the edge of water is where it begins. Rare and literary; more commonly expressed with 始まり or 開始.
この計画はまだ水端についたばかりだ。
This plan is still only at the very beginning.
Compound of 水 (water) and 端 (edge, end). The figurative sense 'beginning' likely derives from the idea of the edge of water as a starting point.