This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
鶆 combines 來 and 鳥, but the exact historical development and original meaning are uncertain.
The kanji visually contains 來 (come) and 鳥 (bird), but its meaning is unclear. It might be a rare bird name or a variant form.
For ライ, imagine a rare bird coming (來) and crying out 'rye!' as it lands: rye -> ライ.
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