Kleegat
The kleegat was a three-sided, bladed Capellan weapon used by tribal warriors on the planet Capella IV. It was highly effective at any distance up to a hundred yards, and was said to be as effective against a man as a phaser.
 
In 2267, a Capellan used a kleegat to kill , a Starfleet security officer, and Kras, a Klingon agent. ()

de:Kligat
Hand-held weapons