This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
鉘 combines 金 (metal) with 弗, which likely contributes the sound. The exact historical development and original meaning are uncertain.
The left side is metal 金, and the right side 弗 looks like a bow with strings. Picture a decorative metal ornament shaped like a bow, used to adorn something.
For フツ, imagine a metal foot adorning a statue: foot -> フツ, and the metal decoration is shaped like the right component.