The kligat was a three-sided, bladed Capellan weapon used by tribal warriors on the planet Capella IV. It was highly effective at ranges of up to a hundred meters.
In 2267, a Capellan used a kligat to kill Grant, a Starfleet security officer, and Kras, a Klingon agent. (TOS: "Friday's Child")
In 2364, a Klingon female conjured up by William T. Riker for Worf wielded a kligat and tried to attack Tasha Yar using the weapon. She was stopped and disarmed by Worf. (TNG: "Hide and Q")
According to the script of the TNG episode, the female Klingon "holds a Klingon weapon – a kligat".