This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
狟 combines the animal radical 犭 with 亘, but the exact historical development and original meaning are uncertain.
The animal radical 犭 suggests a creature, but the right side 亘 does not point to a clear meaning. Imagine a mysterious animal whose name has been lost.
For カン, picture a can tied to the tail of the mysterious animal: can -> カン, and the animal runs off with the clanking can.
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