Long sword

The long sword was a medieval weapon used by knights during the middle ages.

In 2268, when the Beta XII-A entity, transformed the matter into primitive weapons, several long swords were among those created. 

In 2367, as part of Q's Robin Hood scenario, the majority of the USS Enterprise (NCC-1701-D)'s command crew were given long swords, as were Guy of Gisbourne and his knights. Jean-Luc Picard ended up killing Guy with his sword. 

Later in 2371, Harry Kim's holoprogram had many characters armed with long swords, most notably Freya and Unferth. The Doctor also later wielded a sword and defeated Unferth in combat with it.