balance board

noun

: a board that is mounted on a rounded fulcrum and used for various exercises and feats of balance

… up to 30 students at a time are performing yoga stances in unison, stretching, shadow boxing and running in place, all on special balance boards.

—Bob Fowler, Knoxville (Tennessee) News-Sentinel, 3 June 2010

Word History

First Known Use

1966, in the meaning defined above

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