Pronunciation

change

Singular
flail

Plural
flails

 
An example of a grain flail (sense 1)
 
a flail (sense 2)
  1. (countable) A flail is a tool used for threshing. It is made up of a long handle with a shorter stick.
  2. (countable) A flail is a weapon that has a striking part attached to the handle with a flexible joint.

Plain form
flail

Third-person singular
flails

Past tense
flailed

Past participle
flailed

Present participle
flailing

  1. (transitive) If you flail a person, you beat them using a flail (sense 2).
  2. (transitive) If you flail, you wave or swing vigorously.