firebox
noun
fire·box
ˈfī(-ə)r-ˌbäks 
1
: a chamber (as of a furnace or steam boiler) that contains a fire
2
: a box containing an apparatus for transmitting an alarm to a fire station
Examples of firebox in a Sentence
Recent Examples on the Web
Overusing Fieldstone Fieldstone fireplaces were rampant in the 90s and early 2000s, as clients sought to add authenticity to gas fireboxes and new build homes.
—
Abby Wolner, Better Homes & Gardens, 8 Oct. 2025
The oily, tar-like creosote inside your firebox can be dissolved with an alkaline cleaner.
—Brandee Gruener, Southern Living, 5 Oct. 2025
There’s a door on the top of the hopper for adding charcoal, and a firebox door down below.
—PC Magazine, 1 July 2025
Photo: Chad Mellon, Studio Mellon For a fireplace that is off center, minimize the overall impact of the firebox itself.
—Yelena Moroz Alpert, Architectural Digest, 20 Nov. 2024
See All Example Sentences for firebox
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Abby Wolner, Better Homes & Gardens, 8 Oct. 2025
The oily, tar-like creosote inside your firebox can be dissolved with an alkaline cleaner.
—Brandee Gruener, Southern Living, 5 Oct. 2025
There’s a door on the top of the hopper for adding charcoal, and a firebox door down below.
—PC Magazine, 1 July 2025
Photo: Chad Mellon, Studio Mellon For a fireplace that is off center, minimize the overall impact of the firebox itself.
—Yelena Moroz Alpert, Architectural Digest, 20 Nov. 2024
See All Example Sentences for firebox
Cite this Entry
“Firebox.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/firebox. Accessed 11 Oct. 2025.
Copy CitationKids Definition
firebox
noun
fire·box
-ˌbäks
1
: a chamber (as of a furnace) that contains a fire
2
: a box containing a fire alarm
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