This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
轁 combines 車 (vehicle) with 舀, but the exact historical development and original meaning are uncertain.
The left side is a vehicle 車, and the right side 舀 looks like a hand reaching into a container. Without a clear meaning, picture a mysterious cart carrying a covered load.
For トウ, imagine a toe getting caught in the wheel of the mysterious cart: toe -> トウ, and the cart rolls on.