Definitions for "Polearm"
a close combat weapon
a two handed mass weapon consisting of a haft surmounted by a cutting or smashing head of one, two, or four striking surfaces
The general term for a group of pole-mounted weapons usually featuring a cutting or slashing weapon on one end. The halberd, guisarm, bill, bec-de-corbin, and poleaxe are all specific kinds of polearms.
Keywords:  knife, staff
a knife on a staff