This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
漌 is a rare character combining 氵 (water) with 堇, which likely contributes the sound. The exact historical development is uncertain.
With water 氵 on the left and 堇 on the right, imagine a rare, clear stream that is hard to find, reflecting its obscure nature.
For キン, picture a keen observer finding a hidden spring: keen -> キン, and the water 氵 is the rare find.