This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
鈨 combines 金 (metal) and 元, but the exact historical development and original meaning are uncertain.
The kanji has metal 金 and origin 元, but its meaning is unclear. Think of it as a mysterious metal object of unknown purpose.
For はばき, imagine a metal 金 object that makes a 'habaki' sound when struck: habaki -> はばき.
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