1 - A (usually self-sustaining) chemical reaction involving the bonding of oxygen with carbon or other fuel, with the production of heat and the presence of flame or smouldering.
2 - An instance of this chemical reaction, especially when intentionally created and maintained in a specific location to a useful end (such as a campfire or a hearth fire).
3 - The occurrence, often accidental, of fire in a certain place, causing damage and danger.





