sparecover
nounUK /ˈspɛəˌkʌvə/
US /ˈspɛrˌkʌvər/
A sparecover is an extra cover you keep in case the first one gets dirty or lost.
She packed a sparecover for the sofa in case the kids spilled juice.
RELATED WORDS
OTHER MEANINGS
2. A protective sleeve kept as a backup for a book or phone.
He slipped a sparecover over his new phone before the trip.
3. An additional blanket used as a backup on a bed.
Grandma always leaves a sparecover folded at the foot of the guest bed.
4. A second cover for a cushion or seat that can be swapped in.
The car's sparecover kept the seats clean after the muddy hike.