This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
鑃 combines the metal radical 金 with the phonetic component 翟, suggesting a metal object whose name was pronounced similarly to 翟. The exact historical development is uncertain.
The left side 金 suggests metal, and the right side 翟 is a phonetic component. Picture an ancient metal pot or bell whose name sounds like チョウ.
For チョウ, imagine a metal pot named Chou: Chou -> チョウ, and the pot is made of 金.