firestone

• Sustantivo que designa un pedernal o piedra de chispa empleado para encender fuego al golpearlo contra el acero, o bien un tipo de arenisca refractaria resistente a altas temperaturas, usada para revestir chimeneas, hornos o fraguas.

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.

   Pedernal para encender fuego

   • 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.

   Sinónimosflint

2. Heat-resistant stoneC1formal

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

   Piedra refractaria

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