Encyclopedia of historical weapons - Ox-tongue spear
Also called the Langdebeve and Langue de Boeve (both mean tongue of the ox). The ox-tongue spear was a polearm weapon common among the Swiss and French from the 15th to the 17th centuries. It had a long double-bladed head and was named for its resemblance to the tongue of an ox. While it was named a spear, it was a polearm weapon. The ox-tongue design developed into the partisan polearm by the mid 16th century.