This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 骵 is uncertain. It visually combines 骨 (bone) and 本 (origin/book), but the original semantic and phonetic roles are unclear.
Since the meaning is unclear, focus on the shape: 骨 (bone) on the left and 本 (book/origin) on the right. Imagine a book about bones, but remember the meaning is uncertain.
For タイ, think of a tie (ネクタイ) wrapped around a bone-shaped book: tie -> タイ, connecting the shape to the reading.