This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 墖 is uncertain. It combines 土 (earth) with 畣, but the origin and original meaning of this compound are unclear.
The left side is earth 土, and the right side 畣 looks like a structure with a roof and inner rooms. Picture an earthen mound or a small tower made of packed earth, but remember its meaning is uncertain.
For トウ, imagine a tall earthen tower: tower -> トウ. The tower shape fits the right-side component, and the earth radical reinforces the material.
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