press down heavily with hands
捬 centers on applying heavy downward pressure with the hands, as in pressing something firmly.
捬 combines 扌 (hand) with 府, which likely contributes the sound フ and may relate to pressing or applying force. The exact historical development is uncertain.
The hand radical 扌 beside 府 suggests a hand pressing down on a surface with weight, like pushing a seal into place.
For フ, imagine pressing down with a forceful 'foo' sound as you exhale heavily: foo -> フ, and your hands press down hard.