charcoal briquette; coal briquette
A compressed block of charcoal or coal dust used as fuel, especially in traditional heating or cooking.
In winter, we use charcoal briquettes to heat the room.
It takes a little time to light a charcoal briquette.
charcoal-burning suicide
Standard modern spelling.
Older variant using 煉; 練 is now preferred.
From 練 (knead, refine) + 炭 (charcoal), referring to charcoal dust that is kneaded with a binder and pressed into shape.