A freshwater game and food fish (Esox lucius) of the Northern Hemisphere that has a long snout and attains a length of over 1.2 meters (4 feet). Also called northern pike. Any of various fishes closely related to this fish, such as the muskellunge or the pickerels. Any of various fishes that resemble this fish. A turnpike. A tollgate on a turnpike. A toll paid.