A device or board used in swimming training that floats and causes a fluttering motion in water; also, a flexible board used in physical therapy.
Compound of 'flutter' and 'board.' Modern sports equipment term that developed in 20th-century swimming and physical therapy practices.
The flutterboard is genius—it teaches kids to kick their legs in the fluttering motion needed for efficient swimming by giving them feedback through the float and water resistance.
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