A pike was a long, spear-like weapon that infantry troops used in the medieval and Renaissance eras. Fighting with a pike while riding a horse required great balance.
The difference between a pike and a spear is that a pike must be held with two hands in order to be thrust in the direction of an enemy fighter. The pointed end of a pike or spear is also known as a pike. It might seem confusing that a pike is also a type of freshwater fish, until you see the pike's sharp, pointed (pike-like) nose. In transportation, pike can refer to a highway. Finally, pike can mean a position in gymnastics or diving in which an athlete bends at the waist with toes pointed. The Old English root, piic, means "point."