no obj.
1- (of a bird or other winged creature) fly unsteadily or hover by flapping the wings quickly and lightly（鸟或其他有翼动物）拍翅而飞, 振翼, 盘旋：
a couple of butterflies fluttered around the garden.
几只蝴蝶在花园里飞舞。
1.1
- (with reference to a bird's wings) flap in such a way（鸟翅）轻快拍动; 扑棱：
with obj. the lark fluttered its wings, hovering云雀振翅盘旋
no obj. their wings flutter and spread.它们张开翅膀, 轻快地拍动。
1.2
- with adverbial move or fall with a light irregular or trembling motion飘动, 飘落：
the remaining petals fluttered to the ground.
残存的花瓣飘落到地上。
1.3
- with adverbial of direction(of a person) move restlessly or uncertainly（人）奔忙, 忙乱：
the hostess fluttered forward to greet her guests.
女主人赶忙上前迎接客人。
1.4
- (of a pulse or heartbeat) beat feebly or irregularly（脉搏, 心跳）微弱（或不规则地）跳动。
1
- an act of fluttering振翼, 拍翅; 飘动, 飘落：
there was a flutter of wings at the window.
有鸟在窗外拍动翅膀。
1.1
- a state or sensation of tremulous excitement激动不安, （情绪）骚动：
Shiona felt a flutter in the pit of her stomach
希奥娜心里感到一阵不安
her insides were in a flutter.
她内心忐忑不安。
1.2
- mass noun Aeronautics undesired oscillation in a part of an aircraft under stress【航空】颤振。
1.3
- mass noun Medicine disturbance of the rhythm of the heart that is less severe than fibrillation【医】（心脏）扑动, 振颤：
atrial flutter
心房扑动
count noun I was diagnosed as having a heart flutter.我被诊断患有心脏振颤。
1.4
- mass noun Electronics rapid variation in the pitch or amplitude of a signal, especially of recorded sound【电子】（尤指录音）（音高或振幅的）快速颤动。比较WOW2.
2
- Brit. Informal a small bet〈英, 非正式〉小赌注：
a flutter on the horses.
赛马小赌注。
短语
flutter the dovecotes
- informal cause alarm among normally imperturbable people〈非正式〉使沉着的人惊慌。
flutter one's eyelashes
- open and close one's eyes rapidly in a coyly flirtatious manner娇羞地眨眼。
派生词
flutterer
nounflutteringly
adverbfluttery
adjective词源
Old English floterian, flotorian, a frequentative form related to FLEET5.