2. Noun. An enclosed hearth with hatch for refueling that is attached to or built into a boiler that supplies steam for mechanical power. ¹
3. Noun. The internal hearth of a furnace, stove, or heater. ¹
4. Noun. The hearth of an outdoor grill. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Fire Box
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