exercise ball
noun
a firm, very large, usually inflatable ball used in various exercises, chiefly to strengthen the back, pelvis, and abdominal muscles.
Also called
stability ball,
balance ball,
fitness ball.
Words nearby exercise ball
exenteritis,
exequatur,
exequies,
exequy,
exercise,
exercise ball,
exercise bicycle,
exercise bike,
exercise book,
exercise machine,
exercise physiology