clear out, sweep away
拂 centers on removing something unwanted by a sweeping motion: clearing out dirt, dust, or obstacles, or sweeping them away entirely.
拂 combines 扌 (hand) with 弗, which likely contributes the sound and may suggest a sweeping or clearing action. The exact historical development of 弗 in this context is uncertain.
The hand radical 扌 beside 弗 looks like a hand holding a broom or brush, sweeping away dust and clearing the space.
For ヒツ, imagine a hand sweeping away a heap of hits (small pieces of debris): hits -> ヒツ, and each sweep clears them out.