heatpack
nounUK /ˈhiːt.pæk/
US /ˈhiːt.pæk/
A heatpack is a small bag you warm up and put on your body to feel better.
She put a heatpack on her sore neck after sitting at the computer all day.
OTHER MEANINGS
2. A small pouch that produces heat through a chemical reaction when activated.
The hikers carried chemical heatpacks in case the weather turned cold.
3. A reusable microwavable bag filled with grains or gel used for pain relief.
He microwaved the heatpack for two minutes and placed it on his back.
4. A portable warmer used to keep food or hands warm outdoors.
She slipped a heatpack into her gloves before skiing.