A flail is an agricultural implement for threshing.

Look up flail in Wiktionary, the free dictionary.

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

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