warmer
nounUK /ˈwɔː.mər/
US /ˈwɔːr.mɚ/
A warmer is a thing that makes something hot or keeps it hot.
She put the soup in a warmer so it would stay hot.
OTHER MEANINGS
2. The comparative form of warm, meaning more warm.
This coat is warmer than my old one.
3. A person or device that warms something, such as a baby bottle warmer.
He bought a bottle warmer for the baby's milk.
4. A drink or food that makes you feel warm, like a hot toddy.
Grandpa made a winter warmer with honey and lemon.