Kligat

From Memory Alpha, the free Star Trek reference.

The kligat is a Capellan melee weapon. It is a three-sided bladed weapon used by tribal warriors on planet Capella IV. It was highly effective at ranges of up to 100 meters.

In 2267, a Capellan used a kligat to kill Grant, a Starfleet Security Officer, and Kras, a Klingon agent. (TOS: "Friday's Child")