The term 'duel weapon' refers to weapons used in a duel, which is a formalized combat between two people. The most common duel weapons are pistols, rapiers, and epees. Pistols are handguns that fire bullets, rapiers are long, thin swords with a sharp point, and epees are heavier swords with a triangular cross-section and a large bell guard. All three of these weapons are used in fencing, a sport that simulates dueling.