The term 'CONSTRICTOR SNAKE' refers to a type of snake that uses constriction to kill its prey. The most common example of this type of snake is the BOA, which is a three-letter word that can be used to solve the crossword puzzle. Constrictor snakes are found in many parts of the world, including North and South America, Africa, and Asia. They typically feed on small mammals, birds, and other reptiles. These snakes are known for their powerful muscles, which allow them to squeeze their prey until it suffocates.