English Explanatory Dictionary

bosu ball

English dictionary entry

Meanings

noun
  1. A piece of exercise equipment with an inflated rubber dome attached to a rigid flat platform, used for balance training, strength exercises, or rehabilitation.

Pronunciation

/ˈboʊsu ˌbɔl/

Word forms

bosu ball bosu balls Bosu trainer

Etymology

Partial genericized trademark from BOSU, an acronym for "Both Sides Utilized" describing the two usable surfaces (a flat platform and inflated dome) of products like the BOSU Balance Trainer, plus ball.

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