Definition of alligator snapping turtle
: a large freshwater turtle (Macrochelys temminckii synonym Macroclemys temminckii) of southeastern U.S. rivers that may reach nearly 150 pounds (68 kilograms) in weight and 31 inches (79 centimeters) in length and differs from the common snapping turtle in having a shell with three distinct ridges, a more triangular-shaped head, and a pink fleshy wormlike appendage in the mouth used as a lure
