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exercise ball

SEE MORE SYNONYMS FOR exercise ball ON THESAURUS.COM

noun

a firm, very large, usually inflatable ball used in various exercises, chiefly to strengthen the back, pelvis, and abdominal muscles.

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Nearby words

Also called stability ball, balance ball, fitness ball.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019