F4I1R1E1B3R1I1C3K5
20 points
FIREBRICK is validvalid
a brick resistant to fire, used for furnace linings, grates, etc.
a brick resistant to fire, used for furnace linings, grates, etc.
a brick resistant to fire, used for furnace linings, grates, etc.
a brick resistant to fire, used for furnace linings, grates, etc.