1. An implement consisting of handle with a free swinging stick at the end; used in manual threshing
   "The farmer used a flail to separate the grain from the chaff"

1. Beat hard and repeatedly, esp. with a whip, cane, etc.
   "The wind flailed the trees";
   - thrash, thresh, lam [informal]
    
2. Swing or move in a random unstable way
   "Her arms were flailing";
   - thresh

Derived forms: flails, flailing, flailed

Type of: beat, beat up, flap, implement, work over [informal]

Encyclopedia: Flail