hassock

noun

Etymology: From Old English hassoc (“coarse grass”), of uncertain origin.

1. A dense clump of grass or vegetation; a tussock.
2. 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.”

3. A thick cushion used as a seat; an ottoman or pouffe.