This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 詜 is uncertain. It combines 言 (speech) with a right side that may be a phonetic or semantic component, but the origin is not well documented.
With 言 (words) on the left and a tangled right side, 詜 looks like speech becoming disordered. If it has a meaning, it may relate to confusion or disturbance, but this is speculative.
For トウ, imagine a tangled speech bubble that sounds like a low 'toe' murmur: toe -> トウ, as the confused words spill out.