firestone

• Nom désignant une pierre ou un morceau de silex utilisé pour produire des étincelles afin d'allumer un feu, ou une variété de grès réfractaire capable de supporter de hautes températures et employé pour le revêtement des cheminées, poêles ou fours.

A noun referring to a piece of flint used to strike sparks for lighting a fire, or a type of sandstone that can withstand high temperatures and is used to line fireplaces, furnaces, or kilns.

1. Flint for fireC1formal

   A piece of flint or similar stone that is struck against steel to produce sparks for lighting a fire.

   Pierre à feu

   • He used a firestone to ignite the campfire.
   • The survival kit included a firestone and steel striker.
   • Ancient people relied on firestones to create flames.

   Synonymesflint

2. Heat-resistant stoneC1formal

   A type of sandstone or other stone that can withstand very high temperatures, used for lining fireplaces, furnaces, and kilns.

   Pierre réfractaire

   • The blacksmith lined the forge with firestone.
   • Firestone is essential for building durable kilns.
   • The fireplace was constructed with firestone to prevent cracking.