from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of several snakes, such as the mud snake, said to grasp the tail in the mouth and move with a rolling, hooplike motion.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mythical creature of the United States and Australia, a snake that grasps its tail in its jaws and thereby rolls after its prey like a wheel.
from the GNU version of the Collaborative International Dictionary of English
- n. a harmless snake of the Southern United States (Abaster erythrogrammus); -- so called from the mistaken notion that it curves itself into a hoop, taking its tail into its mouth, and rolls along with great velocity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of various harmless North American snakes that were formerly believed to take tail in mouth and roll along like a hoop
Sorry, no etymologies found.