Answer: briquette

AnswerCrossword Clue
BRIQUETTECharcoal chunk
BRIQUETTEPatio fuel unit
BRIQUETTEBlock party block
briquetteA block of compressed charcoal or coal dust used as fuel
briquette(French) a brick-shaped block made of compressed coal-dust also BRIQUET / to form into briquettes