Thunderbolt : A popular term for a lightning discharge accompanied by thunder. In mythology, a thunderbolt is a missile-like object cast to earth in a lightning flash
Masters of Disaster, Lightning Glossary, The American National Red Cross (and Arizona State University), Washington, DC, USA 2007. http://www.azpbs.org/mastersofdisaster/pdf/Lightni ng/LightningGlossary.pdf, (Lghtng Sfty - Amer) {865}