| 1. | an instrument for threshing grain, consisting of a staff or handle to one end of which is attached a freely swinging stick or bar. |
| 2. | a similar instrument used as a weapon of war. |
| 3. | to beat or swing with or as if with a flail. |

flail (flāl)
v. flailed, flail·ing, flails
To move vigorously or erratically; thrash about.
To strike or lash out violently.
flail
ancient hand tool for threshing grain. It consists of two pieces of wood: the handstaff, or helve, and the beater, joined by a thong. The handstaff is a light rod several feet long, the beater a shorter piece. With a flail, one man could thresh 7 bushels of wheat, 8 of rye, 15 of barley, 18 of oats, or 20 of buckwheat in a day (one bushel equals about 35 litres). The flail remained the principal method of threshing until the mid-19th century, when mechanical threshers became widespread (see thresher).
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