from The Century Dictionary and Cyclopedia
- n. A piece of gymnasium apparatus consisting of a long strip of board bent into a quarter-circle, with straps for the feet at the bottom and pulleys for the hands at the top, designed for various exercises, particularly those calling upon the abdominal muscles.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a quarter of the circumference of a circle
Sorry, no etymologies found.