| Answer | Crossword Clue |
|---|---|
| fireboxes | The chamber of a boiler in which the fuel is burned |
| firebox | a chamber in which fuel is burned |
| fireboxes | FIREBOX, a chamber in which fuel is burned |
| fireplace | the part of a chimney that opens into a room and in which fuel is burned |
| injectors | (in an internal combustion engine) The nozzle and valve through which fuel is sprayed into a combustion chamber |
| burner | any apparatus or receptacle in which fuel or refuse is burned |
