This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
暲 combines 日 (sun) with 章, which likely contributes the sound ショウ. The exact historical meaning is uncertain.
The sun 日 beside 章 suggests brightness or a clear pattern, but the exact meaning is unclear. Think of it as a rare character for sunlight or clarity.
For ショウ, imagine the sun 日 shining on a 章 (しょう, chapter) of a book: 章 -> ショウ, and the sunlight makes the chapter bright and clear.
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