Definition
A 'hot-water bottle' is a container, usually made of rubber or plastic, that is filled with hot water to provide warmth. It's like a personal, portable heater. You use it to warm your bed, soothe aches, or just feel cozy on a cold day. It's not as technologically advanced as an electric blanket, but it gets the job done. Imagine it like a warm hug in a bottle. It's a simple way to bring comfort.