brazier; hibachi
A traditional Japanese heating device, typically a round or cylindrical container holding charcoal, used for warmth and sometimes for cooking.
In winter, my grandmother would grill rice cakes over the hibachi for us.
You can still find a hibachi in some old houses.
Since it got cold, I lit the hibachi.
The family gathered around the hibachi and talked.
I roasted rice cakes over the hibachi and ate them.
火鉢 is a portable charcoal container used for warmth in a room, while 囲炉裏 is a sunken hearth built into the floor of a traditional house.
火鉢 is an open charcoal brazier used for direct warmth, while 炬燵 is a low table with a heater and quilt that traps warmth around the legs.
火鉢 (hibachi braziers) are formally counted with 台 as pieces of furniture/tools, but 個 is also commonly used in everyday speech.
Compound of 火 (hi, 'fire') and 鉢 (hachi, 'bowl, pot'). The reading hibachi is a regular rendaku form.