This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
滻 combines 氵 (water) with 産, which likely contributes the sound. The exact historical development is uncertain.
The water radical 氵 beside 産 suggests something related to water, but the meaning is not clear. Imagine a rare character for a specific river or watery place.
For サン, picture the sun (サン) reflecting off the water radical 氵 in this rare kanji: sun -> サン.
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