The bat'leth, or "sword of honor", was a traditional Klingon blade weapon. Resembling a crescent-shaped, two-ended scimitar, the bat'leth was wielded using three handholds along the outside edge of the blade. It was widely considered the most popular weapon among Klingon warriors.
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. (TNG: "Rightful Heir") (See also: The Story of the Promise)
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 five hundred years after his death. (DS9: "The Sword of Kahless")
A traditional bat'leth was typically approximately 116 centimeters long, with blades of composite baakonite, weighs about 5.3 kilograms, and has an exterior hand grip diameter of 5 centimeters. (DS9: "Blood Oath")
In the alternate reality, at least two Klingon warriors wielded weapons similar to bat'leths in a battle between a Klingon patrol, a USS Enterprise away party led by James T. Kirk, and "John Harrison" in the Ketha Province. (Star Trek Into Darkness)
- "Blood Oath"
- "The House of Quark"
- "The Way of the Warrior"
- "The Sword of Kahless"
- "Sons of Mogh"
- "Bar Association"
- "Looking for par'Mach in All the Wrong Places"
- "Nor the Battle to the Strong"
- "Sons and Daughters"
- "You Are Cordially Invited"
- "Image in the Sand"
- "Tacking Into the Wind"
- Star Trek Generations
The Klingon word for this weapon is betleH, etymologically derived from batlh 'etlh ("glory blade").
The bat'leth appeared in the background in the Stargate SG-1, sixth season episode "The Other Guys". John Billingsley, who played Dr. Phlox on Enterprise, also appears in the episode as a Trek-obsessed scientist.