This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 徝 is uncertain. It visually combines 彳 (movement) and 直 (straight), but the original meaning and component relationship are unclear.
With no clear meaning, picture a person 彳 walking straight 直 ahead, but the destination is unknown.
For チ, imagine a tiny person 彳 walking straight 直, and the sound of their steps is a soft 'chi'.