This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 泍 is uncertain. It visually combines 氵 (water) with 本, but the original meaning and component relationship are unclear.
With water 氵 beside 本 (origin, book), you might imagine a book floating on water, but the meaning is uncertain.
For ホン, picture a book (本, ほん) floating on water: 本 -> ホン, and the water radical 氵 keeps it afloat.
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