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Look up flail in Wiktionary, the free dictionary.
A flail is an agricultural implement for threshing.
Flail may also refer to:
- Flail (weapon), a ball-on-a-chain bludgeon wielded with one hand by armored knights in single combat or medieval battles
- Flail, the cutting part in some designs of brush hog, stump grinder, and woodchipper
- Mine flail, a vehicle mounted device for removing land mines