river in Hubei province
溠 is a rare kanji that refers specifically to a river in Hubei province. Its meaning is a proper name with no broader conceptual center.
溠 combines the water radical 氵 with 差, likely as a phono-semantic compound where 差 hints at the sound and 氵 indicates a river or water body. The exact historical development is uncertain.
The water radical 氵 beside 差 suggests a river whose name sounds like 差. Picture a river in Hubei marked on an old map with the character 溠.
For サ, imagine the river's name sounding like 'Sa' — a short, simple sound. Picture someone pointing at the river and saying 'Sa' as its name.
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