Alligator snapper , Alligator tortoise , Alligator turtle Meaning, Definition & Usage

Definitions
  1. (Zoöl.), a very large and voracious turtle (Macrochelys lacertina) in habiting the rivers of the southern United States. It sometimes reaches the weight of two hundred pounds. Unlike the common snapping turtle, to which the name is sometimes erroneously applied, it has a scaly head and many small scales beneath the tail. This name is sometimes given to other turtles, as to species of Trionyx.

Webster 1913