from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A physical exercise in which one uses the abdominal muscles to raise the torso from a supine to a sitting position and then lies back down again without moving the legs.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An exercise in which the abdominal muscles are contracted, bringing the torso of a person lying down to a more upright position.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a stomach exercise in which a person sits up from a supine position without using the arms for leverage
Sorry, no etymologies found.