jellycushion
nounUK /ˈdʒɛliˌkʊʃən/
US /ˈdʒɛliˌkʊʃən/
A soft, squishy pad filled with jelly that you can sit or rest on.
She put a jellycushion on her chair to make it comfy.
OTHER MEANINGS
2. A small gel-filled pad used to protect a sore spot or pressure point.
He used a jellycushion to ease the pressure on his heel.
3. A wobbly, jelly-like insert used in shoes for extra comfort.
These jellycushions make my boots feel much softer.
4. A playful term for a very soft, wiggly seat or surface.
The kids bounced on the jellycushion like it was a trampoline.