This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
鈓 is a rare character combining 金 (metal) with 壬. The exact historical development is uncertain.
The left side is metal 金, and the right side is 壬. Without a clear meaning, picture a mysterious metal object marked with the symbol 壬.
For ジン, imagine a genie emerging from the metal object: genie -> ジン, and the mysterious metal 鈓 glows.