This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
偑 combines 亻 (person) with 風 (wind), but the exact historical development and original meaning are uncertain.
A person 亻 standing in the wind 風, but what it means is unclear.
For フウ, imagine a person 亻 feeling the wind 風 blow: the wind sound 'fuu' (フウ) is the reading.
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