Swiss ball(redirected from Equilibrium Ball)
Also found in: Medical.
See exercise ball.
[From the early use of exercise balls by physical therapists in Switzerland during the 1960s.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(General Sporting Terms) a very large inflatable ball made of strong elastic rubber, used for physical exercise and in physiotherapy
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014