This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The historical origin of 奙 is uncertain. It appears to combine 奄 with 电, but the exact development and original meaning are unclear.
Since the meaning is unclear, focus on the shape: 奄 (cover) over 电 (electricity), like a covered electrical device. This may help recall the character even without a fixed meaning.
For ホン, imagine a covered electric device humming with a deep 'hon' sound: hon -> ホン.
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