n. A piece of wood kindled or on fire; a piece of any burning substance.n. Hence That which or one who sets on fire, literally or figuratively; specifically, an incendiary, in any sense; especially, one who inflames factions, or causes contention and mischief.n. In heraldry, specifically, a torch. When ignited it is blazoned as firebrand inflamed. It is represented as a torch or as a pale or pallet raguly couped. In the latter case it is always inflamed at the top.Of an incendiary nature.