swipples

/ˈswɪpəlz/
noun
  1. The movable part of a flail that strikes the grain, used in threshing.
    • The farmer replaced the worn swipples on his flail before harvest.
    • He swung the flail, and the swipple beat the wheat to separate the grain.
    • In the museum, they displayed an old flail with a wooden swipple.