This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
豅 combines 谷 (valley) and 龍 (dragon), but the exact historical development and original meaning are uncertain.
The kanji visually combines 谷 (valley) and 龍 (dragon). Picture a dragon hidden deep in a valley, but remember that the actual meaning is unclear.
For ロウ, imagine a dragon in a valley letting out a low roar: low -> ロウ.
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