Firestone
name, noun ·2 syllables ·Rare ·Advanced level
Definitions
- 1 Iron pyrite, formerly used for striking fire. countable, uncountable
- 2 a sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns wordnet
- 3 A flint. countable, uncountable
- 4 a piece of flint that is struck to light a fire wordnet
- 5 A stone which will bear the heat of a furnace without injury; especially applied to the sandstone at the top of the upper greensand in the south of England, used for lining kilns and furnaces. countable, uncountable
"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."
- 1 A surname from German.
Example
More examples"Fire glows, burns and consumes to ashes. A spark of it struck from a flint (or firestone) by means of a steel, and taken by tinder in a tinder box, lights a match, and after that a candle, or a stick, and causes a flame, or blaze, which catches hold of houses."
Etymology
Translation of the German toponymic surname Feuerstein, from Feuer (“fire”) + Stein (“stone”). Doublet of Feuerstein.
From Middle English firestone, firstan, fyrestane, fyyr stone, from Old English fȳrstān, equivalent to fire + stone.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.