This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
惂 combines 忄 (heart) with 臽, which likely contributes the sound. The exact historical development is uncertain.
The heart radical 忄 beside the rare component 臽 suggests an emotional state, but the specific meaning is unclear. Imagine a heart tangled in a complex trap, causing distress.
For カン, imagine a heart trapped in a can: can -> カン, and the heart struggles inside.