This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The historical origin of 躢 is uncertain. It appears to combine 足 (foot) with 闒, but the component relationship and original meaning are unclear.
The foot radical 足 suggests an action involving the foot, but the overall meaning is unclear. Imagine a rare, mysterious foot movement hidden behind the complex right side.
For トウ, picture a toe stepping into a mysterious ancient gate: toe -> トウ, and the foot radical 足 moves through the gate-like 闒.