fire·​box ˈfī(-ə)r-ˌbäks How to pronounce firebox (audio)
: a chamber (as of a furnace or steam boiler) that contains a fire
: a box containing an apparatus for transmitting an alarm to a fire station

Examples of firebox in a Sentence

Recent Examples on the Web The company suggests using the foaming feature on its spray bottle to help the cleaner stay on the surface longer, but that’s probably more useful for cleaning a firebox’s walls than its floor. Jeanne Huber, Washington Post, 17 Nov. 2023 The grill is well constructed and boasts a rust-resistant firebox. Lauren Breedlove, Travel + Leisure, 31 Oct. 2023 Find it on Amazon Add a Touch of Glam with This Media Fireplace This glamorous Mirrored Media Fireplace includes storage cabinets and a color-changing firebox. Theresa Johnson, Rolling Stone, 18 Oct. 2023 If the firebox has a gas line, that will need to be capped off. Caron Golden, San Diego Union-Tribune, 19 Aug. 2023 Once the firebox is clean, rinse it out with a garden hose. Timothy Dahl, Popular Mechanics, 27 July 2023 These have a large, horizontal grilling and smoking chamber and a separate firebox set off to the side. John Sass, Field & Stream, 27 Sep. 2023 The fireplace has a brick firebox and a mantel that matches that exposed beam. John R. Ellement,, 26 July 2023 Heat is managed, as with most charcoal smokers, by adjusting vents by the fire, in the firebox, and in the top of the vertical chamber. Bradley Ford, Popular Mechanics, 7 Mar. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'firebox.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1735, in the meaning defined at sense 1

Time Traveler
The first known use of firebox was in 1735

Dictionary Entries Near firebox

Cite this Entry

“Firebox.” Dictionary, Merriam-Webster, Accessed 7 Dec. 2023.

Kids Definition


fire·​box -ˌbäks How to pronounce firebox (audio)
: a chamber (as of a furnace) that contains a fire
: a box containing a fire alarm
Last Updated: - Updated example sentences
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