If your arms or legs flail or if you flail them about, they wave about in an energetic but uncontrolled way.
例句
His arms were flailing in all directions...他的手臂胡乱挥舞着。He gave a choked cry, flailed his arms wildly for a moment, and then went over the edge.他闷哼了一声,手臂乱挥了几下,就从边上摔了下去。
N-COUNT
连枷(脱粒用的农具)
A flail is a tool which consists of a piece of wood or metal that can swing freely from a handle. Flails are used to beat crops such as corn in order to separate the grain from the rest of the plant.
英汉词典释义
vt.
(臂或腿)无法控制地乱动
He flailed about in the water, shouting ‘I can’t swim!’他在水中胡乱摆动双臂,大叫“我不会游泳!”。The prisoner’s limbs flailed violently because of the pain.那囚犯因为疼痛,四肢剧烈地抖动着。
英英词典释义
Noun
1. an implement consisting of handle with a free swinging stick at the end; used in manual threshing