Kar'takin

The kar'takin was a short polearm with a straight-edged blade and a stabbing point, favored by the Jem'Hadar for hand-to-hand combat.

They were used by Dominion and Starfleet forces in the assault on Vandros IV in 2372. 

During the Dominion War, captured kar'takins were kept aboard Klingon ships for training purposes.