noun
A tool used for threshing, consisting of a long handle (handstock) with a shorter stick (swipple or swingle) attached with a short piece of chain, thong or similar material.
A weapon which has the (usually spherical) striking part attached to the handle with a flexible joint such as a chain.
(often plural) Part of a rotating device, often used for cutting vegetation.
verb
(transitive) To beat using a flail or similar implement.
(transitive) To wave or swing vigorously
(transitive) To thresh.
(intransitive) To move like a flail.