from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various extinct cats of the Oligocene to the Pleistocene Epoch, especially one of the larger members of the genus Smilodon, characterized by long upper canine teeth.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of numerous species of prehistoric cat-like mammals (genus Smilodon), characterized by massive, but short, legs and two large canine teeth, each about seven inches long and shaped like sabers.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of many extinct cats of the Old and New Worlds having long swordlike upper canine teeth; from the Oligocene through the Pleistocene
Sorry, no etymologies found.