from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A sudden twitching of muscles or parts of muscles, without any rhythm or pattern, occurring in various brain disorders.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The brief, involuntary twitching of a muscle or group of muscles.
from The Century Dictionary and Cyclopedia
- n. Spasmodic contraction of the muscles of the extremities and, less frequently, of the back.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a clonic spasm of a muscle or muscle group