toewarmer
nounUK /ˈtəʊˌwɔːmə/
US /ˈtoʊˌwɔːrmər/
A toewarmer is a soft, warm thing you put on your feet to keep your toes cozy.
She knitted a fuzzy toewarmer for each foot before the snowy walk.
OTHER MEANINGS
2. A small heated pad or device placed inside shoes to warm the toes.
He slipped a battery-powered toewarmer into his boots before skiing.
3. A person or animal that keeps someone's toes warm, often used playfully.
The puppy curled up on my feet like a little toewarmer.
4. A knitted or fleece tube worn over the toes while sleeping.
Grandpa wears his toewarmers to bed on cold winter nights.