spacesaver

noun
UK /ˈspeɪsˌseɪvə/
US /ˈspeɪsˌseɪvər/

A spacesaver is a thing that helps you save room.

We bought a spacesaver bed that folds up against the wall.


OTHER MEANINGS

2. A person or device that conserves space in a room or building.

The new spacesaver shelves fit neatly under the stairs.

3. A piece of furniture designed to take up little room.

Their apartment is small, so they only use spacesavers.

4. Something that reduces wasted room in a vehicle or container.

This spacesaver spare tire takes up less trunk space.