rubbercover
nounUK /ˈrʌbəˌkʌvə/
US /ˈrʌbərˌkʌvər/
A rubbercover is a soft rubber thing that goes over something to keep it safe.
She put a rubbercover on her phone so it would not break.
OTHER MEANINGS
2. A rubber sheet used to protect a floor or surface.
The painter spread a rubbercover over the carpet.
3. A rubber cap that fits over the end of a pipe or pole.
He pushed a rubbercover onto the pipe to stop the leak.
4. A removable rubber top for a container.
Put the rubbercover back on the jar so the paint does not dry out.