This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 抷 is uncertain. It visually combines 扌 (hand) with 丕, but the original role of 丕 in this character is unclear.
With no clear meaning, focus on the shape: a hand 扌 beside 丕. If you encounter it, treat it as an unknown hand-related action.
For ヒ, imagine a hand 扌 making a small 'hee' sound of effort while doing something with the 丕 shape: hee -> ヒ.