Spontone description

Tannhauser stooped towards the Italian spontone that the second man had dropped when his head had been skewered to the wall. The spearhead was a twelve-inch double-edged blade, much like a broadsword's, but but at the base were two scalloped and sharpened wings for cutting and trapping. A kind of trident with truncated side blades. The shaft was hexagonal and shod with three strips of iron. The butt was socketed with into a spiked steel counterweight, its narrow tip bevelled like a chisel.
-TTCoP, pg. 282