A three-bladed throwing weapon carried by the warriors of Capella IV, which Starfleet briefings describe as deadly in practised hands at a range of up to one hundred yards.
The kligat is the traditional weapon of the Capellans, the tall warrior people of the Ten Tribes in the episode Friday's Child. It is a flat disc with three curved blades, thrown with a spinning motion.
McCoy, who once served on Capella IV, warns the landing party about it before they beam down. The warning comes too late for a security guard named Grant, who draws his phaser on seeing a Klingon among the Capellans and is killed instantly by a kligat.
After the leader Akaar is overthrown, Kirk, Spock and McCoy flee into the hills with his pregnant widow Eleen and face kligats again, answering them with bows made on the spot, a weapon the Capellans have never developed.