Look up flail in Wiktionary, the free dictionary.
Flail may refer to:
- Flail (tool), an agricultural implement for threshing
- 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
