Bat'leth
From Star Trek Online Geekipedia
The bat'leth, or "sword of honor" in Klingon, is an iconic Klingon bladed weapon. The weapon is crescent shaped with a large slashing surface coming to a point at both ends of the crescent for piercing and is wealeded using three hand holds located along the reverse side of the blade. It has proven extremely popular with Klingon Warriors for its long reach and great power. The universal nature of the Bat'leth has made it an icon of the Klingon Empire itself.
According to Klingon mythology, the first bat'leth was forged by Kahless the Unforgettable in the 9th century. Kahless cut a lock of his hair and dropped it into the lava of the Kri'stak volcano, then plunged the burning lock into the Lake of Lusor and twisted it into a blade. After forging the weapon, he used it to fight the tyrant Molor, and then gave it its name. This story was not recorded in public texts, but was passed down verbally by the Klingon clerics as a test of Kahless' return.
The Sword of Kahless was preserved by the Klingons following Kahless' death, until it was stolen by the Hur'q when they plundered Qo'noS about 500 years after his death.
