fire·​box | \ ˈfī(-ə)r-ˌbäks How to pronounce firebox (audio) \

Definition of firebox

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 Unlike pellet stoves and grills, this heater requires no electricity—the firebox is fed by gravity. Roy Berendsohn, Popular Mechanics, "The Best Patio Heaters To Beat The Winter Chill," 31 Dec. 2020 What was a short and stumpy gas fireplace, little more than a firebox, got lost in the large bedroom. Richard A. Marini,, "Couple spent $200K on historic Olmos Park Tudor home renovation to strip away 1980s touches and upgrade the kitchen, master suite," 30 Oct. 2020 Dress up any hearth with a screen fitted exactly to your firebox. The Editors, Outdoor Life, "3 Ways to Prevent Fireplace Accidents," 13 Sep. 2019 Installed inside the firebox of a gas fireplace, a strip of LED lights can be programmed to shine multiple colors onto the flames to fit the mood — green and red at Christmas, for example, or sparkly white on New Year’s Eve. Richard A. Marini,, "The 6 hottest trends in outdoor fireplaces," 9 Oct. 2020 The firebox has seven separate levels of coal dust that can be ignited at once. Eric Lipton, New York Times, "“We are back. The coal industry is back,”," 6 Oct. 2020 People keep backyard chickens; why not a backyard cow?In her kitchen, Ruta feeds wood into the firebox of her cepeškrāsns, the traditional Latvian wood stove that is the centerpiece of her house. Amy Thielen, Saveur, "Cooking Lessons from the Latvian Countryside," 10 Oct. 2018 Before investing in an electric splitter, measure the size of your firebox. The Editors, Field & Stream, "Three Ways to Split Wood Faster and Easier," 19 Aug. 2020 After scraping away excess creosote, Mueller checks the firebox for cracks or gaps between bricks. Eddie Morales, Milwaukee Journal Sentinel, "Once winter is over, think about getting your chimney cleaned," 5 Mar. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'firebox.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of firebox

1735, in the meaning defined at sense 1

Keep scrolling for more

Learn More about firebox

Time Traveler for firebox

Time Traveler

The first known use of firebox was in 1735

See more words from the same year

Statistics for firebox

Last Updated

15 Jan 2021

Cite this Entry

“Firebox.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on firebox

What made you want to look up firebox? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
True or False

Test your knowledge - and maybe learn something along the way.


Anagram puzzles meet word search.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!