This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
摚 combines 扌 (hand) with 堂, which likely contributes the sound. The exact historical development is uncertain.
The hand radical 扌 beside 堂 suggests an action involving a hall or elevated place, but the specific meaning is unclear.
For トウ, imagine a hand (扌) reaching toward a tall hall (堂): the hall's towering shape cues トウ.