briquet
briquet , noun
[French, dim. of brique brick.]
1.
A block of compacted charcoal, coal dust, or peat, etc., used as a fuel. Charcoal briquettes are a common fuel used for the outdoor barbecue grill.
2.
A block of artificial stone in the form of a brick, used for paving; also, a molded sample of solidified cement or mortar for use as a test piece for showing the strength of the material.
Also: Briquette