Heavy medieval polearm. Literally, "beak of the raven" (IIRC, any french speakers out there can /msg me to correct this), the business end was used to punch holes in plate mail armor (and the soft gushy bodies concealed therewith). This weapon was about eight feet long, with both a straight point and a long, hooked blade stemming from the top. Hence the name, I suppose. This weapon was also used to forcefully dismount horseback riding soldiers, though much more appropriate weapons existed to do this as well.

See also: halberd, glaive, guisarme, partisan, voulge, and pike.