This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
遦 combines 辶 (movement) with 貫, which likely contributes a sound element. The exact historical development is uncertain.
The movement radical 辶 wraps around 貫, suggesting something like 'going through' or 'passing along,' but no clear meaning is established.
For カン, picture a can rolling along a path: can -> カン, and the movement radical 辶 shows it moving.