warmcover
nounUK /ˈwɔːmˌkʌvə/
US /ˈwɔːrmˌkʌvər/
A warmcover is a soft blanket or cover that keeps you warm.
She pulled the warmcover up to her chin on the cold night.
OTHER MEANINGS
2. A protective layer that keeps heat inside something.
The engine's warmcover kept it from freezing overnight.
3. A cozy garment worn for extra warmth.
He wore a warmcover over his shirt on the windy walk.
4. A covering placed over plants to protect them from cold.
Gardeners spread a warmcover over the seedlings before the frost.