This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
眮 combines 目 (eye) with 同, which likely contributes the sound. The exact historical development is uncertain.
The left side is an eye 目, and the right side is 同. Without a clear meaning, picture an eye looking at something identical, but the overall idea remains vague.
For トウ, imagine a toe poking an eye: toe -> トウ, and the eye 目 is on the left.