This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
襉 combines 衤 (clothing) with 閒, which likely contributes sound. The exact historical development is uncertain.
The clothing radical 衤 beside 閒 suggests a garment-related idea, but without a clear meaning, picture an obscure traditional robe with pleats or folds.
For カン, imagine a can of starch used to stiffen the pleats of an old robe: can -> カン, and the clothing radical 衤 keeps the scene garment-focused.