a charred piece of wood. FIREBRAND sense 1. something (such as lightning) that resembles a firebrand. SWORD. a mark made by burning with a hot iron to attest manufacture or quality or to designate ownership. a printed mark made for similar purposes: TRADEMARK. a mark put on criminals with a hot iron. a mark of disgrace: STIGMA. a class of goods identified by name as the product of a single firm or manufacturer: MAKE. a characteristic or distinctive kind. BRAND NAME sense 2. a public image, reputation, or identity conceived of as something to be marketed or promoted. a tool used to produce a brand. to mark with a brand. to mark with disapproval: STIGMATIZE. to impress indelibly.