noun
hassock
HAS-uk/ˈhæsək/
A thick cushion used as a seat, footrest, or kneeling pad.
The hassock has a thick cushioned top supported by short wooden feet.

Etymology
Old English hassuc meant a clump of grass. The cushion sense likely arose from the perceived resemblance between a tuft of grass and a thick cushion used for kneeling.
More examples
- The child sits on a hassock to hear the story.
- We kneel on hassocks during prayer.
- He slides the hassock under the table when guests arrive.
Forms
hassock · hassocks