hassock
A dense clump of grass or vegetation; a tussock.
A cushion used primarily in churches for kneeling on while praying.
At the next service he found a flower on his hassock and a highly suggestive Catholic bookmarker tucked into his hymn-book.
A thick cushion used as a seat; an ottoman or pouffe.
Where it comes from
From Old English hassoc (“coarse grass”), of uncertain origin.
Adapted from the Wiktionary entry hassock (CC BY-SA 4.0).