Definition of exercise ball in English:

exercise ball

Syllabification: ex·er·cise ball

noun

A lightweight, inflated plastic ball with a diameter of 18-36 inches (45-91 cm), used in various fitness and physiotherapeutic exercises. Also called stability ball.
More example sentences
  • Lie on your back and rest your legs on top of an exercise ball, tucking the ball behind your knees.
  • At MUSCLE & FITNESS, we often recommend using an exercise ball for moves like crunches and back extensions.
  • After little to no rest, grab a pair of lighter weights and do 10-15 flyes on an exercise ball.

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Pronunciation: ˈflipənt
adjective
not showing a serious or respectful attitude