词典释义：
(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
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a couple of butterflies fluttered around the garden. 几只蝴蝶在花园里飞舞。
(with reference to a bird's wings)flap in such a way
（鸟翅）轻快拍动；扑棱
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[with obj.]
the lark fluttered its wings, hovering 云雀振翅盘旋
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[no obj.]
their wings flutter and spread. 它们张开翅膀，轻快地拍动。
[with adverbial]move or fall with a light irregular or trembling motion
飘动，飘落
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the remaining petals fluttered to the ground. 残存的花瓣飘落到地上。
[with adverbial of direction](of a person)move restlessly or uncertainly
（人）奔忙，忙乱
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the hostess fluttered forward to greet her guests. 女主人赶忙上前迎接客人。
(of a pulse or heartbeat)beat feebly or irregularly
（脉搏，心跳）微弱（或不规则地）跳动。
an act of fluttering
振翼，拍翅；飘动，飘落
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there was a flutter of wings at the window. 有鸟在窗外拍动翅膀。
a state or sensation of tremulous excitement
激动不安，（情绪）骚动
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Shiona felt a flutter in the pit of her stomach 希奥娜心里感到一阵不安
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her insides were in a flutter .她内心忐忑不安。
[mass noun]
【航空】 颤振。
[mass noun]
【医】 （心脏）扑动，振颤
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atrial flutter 心房扑动
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[count noun]
I was diagnosed as having a heart flutter. 我被诊断患有心脏振颤。
[mass noun]
【电子】 （尤指录音）（音高或振幅的）快速颤动。比较<Bold>WOW</Bold><Superscript>2</Superscript>.
〈英， 非正式〉 小赌注
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a flutter on the horses. 赛马小赌注。
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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
"Old English