This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
貋 combines 豸 (beast/animal) with 旱 (drought). The exact historical development is uncertain, and no clear meaning is recorded.
A beast 豸 in a drought 旱 suggests something fierce or dry, but the true meaning is unclear.
For カン, imagine a can of water for the drought-stricken beast: can -> カン.
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