English dictionary

firestone

/'f/aI//-/r,st/oU/n/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

a piece of flint that is struck to light a fire

noun.substance

Source: WordNet 3.0
a sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns

noun.object

Source: WordNet 3.0
Iron pyrites, formerly used for striking fire; also, a flint.

noun

Source: webster1913