Word.ws English Dictionary

firestone

firestone noun: iron pyrite, formerly used for striking fire.

Noun

firestone (countable and uncountable, plural firestones)

  1. Iron pyrite, formerly used for striking fire.
  2. A flint.
  3. A heat-resistant stone that will withstand intense heat of a furnace, used for lining kilns, campfire rings, fireplaces and furnaces; especially, the sandstone at the top of the upper greensand in the south of England.
    • On the descent the line is often in cuttings; some are high, such as at Scarcroft, where a cut through firestone and fireclay was necessary, and near Bardsey, where the line threads a deep tree-lined gorge.1961 February, D. Bertram, “The lines to Wetherby and their traffic”, in Trains Illustrated, page 101

Proper noun capitalized: Firestone

Firestone (plural Firestones)

  1. A surname from German.

Forms of firestone

Noun
pluralfirestones
alternative formfire stone
alternative formfire-stone
Proper noun
pluralFirestones

Origin of firestone

From Middle English firestone, firstan, fyrestane, fyyr stone, from Old English fȳrstān, equivalent to fire + stone.

Translation of the German toponymic surname Feuerstein, from Feuer (“fire”) + Stein (“stone”). Doublet of Feuerstein.

Phrases with firestone

Questions about firestone

What does firestone mean?
Firestone means iron pyrite, formerly used for striking fire.
What part of speech is firestone?
Firestone can be a noun or a proper noun.
What is the plural of firestone?
The plural of firestone is firestones.

Words near firestone in the dictionary

  1. Firesters
  2. firestick
  3. firestick farming
  4. firesticks
  5. firestink
  6. firestone
  7. Firestone layaway
  8. Firestone layaways
  9. firestones
  10. firestop
  11. firestopping

Source and license

Adapted from Wiktionary: firestone (page history and authors); Firestone (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “firestone.” Word.ws, https://word.ws/firestone. Based on Wiktionary, CC BY-SA 4.0.