Any species of very large snakes of the genus Python, and allied genera, of the family Pythonidæ. They are nearly allied to the boas. Called also rock snake.
- Any of various nonvenomous snakes of the family Pythonidae, found chiefly in Asia, Africa, and Australia, that coil around and suffocate their prey. Pythons often attain lengths of 6 meters (20 feet) or more.