Epees are electrified swords that were used in fencing during the 19th century. The term 'epee' is derived from the French word for sword, and it refers to a type of fencing weapon with a sharp point and a guard. The electrified swords were connected to a battery and a wire, which allowed the fencer to score a point when the sword touched the opponent's body. This type of fencing was popular in Europe during the 19th century, and it is still practiced today.