Any source of heat, natural or human made, capable of igniting wildland fuels Flaming or glowing fuel particles that can be carried naturally by wind, convection currents, or by gravity into unburned fuels Examples include: leaves, pine cones, glowing charcoal, and sparks
If you describe someone as a firebrand, especially someone who is very active in politics, you mean that they are always trying to make people take strong action. his reputation as a young firebrand. someone who tries to make people angry about a law, government etc so that they will try to change it
Any source of heat, natural or man made, capable of igniting wildland fuels; flaming or glowing fuel particles that can be carried naturally by wind, convection currents, or gravity into unburned fuels