Definitions

1. noun

a warm, milky drink, typically made with hot milk and a sweet or savory ingredient, often served as a soothing remedy for colds or sore throats

“The elderly grandmother used to make a posset for me whenever I had a cold.”

2. verb

to warm or heat something, typically by immersing it in hot liquid, often as part of a traditional medical treatment

“The nurse possetted the injured limb in a warm bath to reduce the swelling.”