This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
迵 combines the movement radical 辶 with 同, which likely contributes sound. The exact historical development and original meaning are uncertain.
The movement radical 辶 surrounds 同 (same). Picture moving along the same path repeatedly, but since the meaning is unclear, treat this as a placeholder.
For トウ, imagine a toe (トウ) stepping along the same path over and over: toe -> トウ, and the movement radical 辶 suggests walking.