A boar spear is a spear used for boar hunting. It is relatively short and heavy and has two "lugs" or "wings" on the spearsocket behind the blade, which act as a barrier to prevent an injured and furious boar from working its way up the shaft of the spear to attack the hunter.
The boar spear also became popular as a weapon of war, since the lugs can also be used to hook shields out of the way during combat, as well as preventing a spear thrust from going too far into a victim (particularly a charging horse), thus making it easier to quickly withdraw, and less likely to break. Boar spears remained in use as weapons until the early Middle Ages, though it is still sometimes used in Germany. In the 15th century, a variant with a longer shaft called a chiavarina was in use as a weapon of war.