/'flʌtə(r); `flʌtɚ/
v
1 (a) [I, Ipr] (of the wings of birds, butterflies, etc) move lightly and quickly （指鸟、蝴蝶等的翅膀）轻而快地抖动, 拍翅
*The wings of the bird still fluttered after it had been shot down. 那鸟击落後翅膀仍在抖动.
(b) [Tn] move (the wings) in this way 鼓（翼）; 拍（翅膀）
*The bird fluttered its wings in the cage. 鸟在笼中拍着翅膀.
2 (a) [I, Ipr] move about in a quick irregular way 迅速而无规则地乱动; 飘动
*a flag fluttering from the mast-head 在旗杆顶上飘扬着的旗帜
* curtains fluttering in the breeze 在微风中飘动的窗帘.
(b) [Tn] move (sth) in this way 使（某物）迅速而无规则地动
*She fluttered her eyelashes (at me). 她（朝我）眨眼睛.
3 [I] (of the heart) beat weakly and irregularly, esp because of nervous excitement （指心脏）微弱而无规律地跳动（尤指因紧张激动所致）.
4 (idm 习语) ,flutter the `dovecotes astonish, upset or alarm people who are used to a calm or conventional life 惊扰过惯平静或平凡生活的人们.
5 (phr v) flutter about, around, across, etc
(a) fly in the specified direction with quick light movements of the wings 拍动翅膀飞（向某方向）
*The wounded bird fluttered to the ground. 那受伤的鸟拍着翅膀落到地上.
* A moth was fluttering round the lamp. 有一只蛾子扑打着翅膀绕着灯飞.
(b) move in the specified direction in a quick irregular way 迅速而无规则地（向某方向）运动
*autumn leaves fluttering to the ground 飘摇落地的秋叶
* She fluttered nervously about, going from room to room. 她紧张不安地从这房间到那房间四处走动.

n
1 (usu sing 通常作单数) quick irregular movement 迅速而无规则的运动
*the flutter of wings 翅膀的拍动
* with a flutter of her long dark eyelashes 她那长着又长又黑睫毛的眼睛一眨.
2 [sing] state of nervous or confused excitement 紧张; 慌乱
*in a flutter 心绪不宁
* all of a flutter 突然一阵慌乱
* The arrival of the first customer caused a flutter (of activity) in the shop. 第一位顾客登门, 引起店中一阵慌乱.
3 [U]
(a) dangerous vibration in part of an aircraft, esp the wings （飞行器的一部分, 尤指机翼的）危险的颤振.
(b) rapid variation in the pitch or loudness of recorded sound 录音中的音高或音量的迅速变化. Cf 参看 wow2.
4 [C] (Brit infml 口) ~ (on sth) small bet or gamble 小赌; 小赌注
*have a flutter (on a horse) at the races 在赛马中（在一匹马上）下小赌注.