compressionsack

noun
UK /kəmˈprɛʃən sæk/
US /kəmˈprɛʃən sæk/

A compression sack is a bag you squeeze to make your things small.

She packed her sleeping bag into a compression sack so it would fit in her backpack.


OTHER MEANINGS

2. A medical bag used to hold and press down on an injury.

The nurse placed a compression sack of ice on his swollen knee.

3. A heavy bag squeezed tight to press something flat.

The printer uses a compression sack to flatten the paper sheets.

4. A small pouch that keeps air out of food.

He stored the coffee beans in a compression sack to keep them fresh.