名詞 flutter:

1. the act of moving back and forth
   同義詞：waver, flicker
2. abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block
3. a disorderly outburst or tumult
   同義詞：disturbance, disruption, commotion, hurly burly, to-do, hoo-ha, hoo-hah, kerfuffle
4. the motion made by flapping up and down
   同義詞：flap, flapping, fluttering

動詞 flutter:

1. move along rapidly and lightly; skim or dart
   同義詞：flit, fleet, dart
2. move back and forth very rapidly
   同義詞：flicker, waver, flitter, quiver
3. flag the wings rapidly or fly with flapping movements
4. beat rapidly
   同義詞：palpitate
5. wink briefly
   同義詞：bat

1. His heart fluttered with fear.
   他害怕得心怦怦亂跳。
2. She fluttered her handkerchief from the train window as a good-bye.
   她從火車窗口里伸出手揮動手帕道別。
3. Banners fluttered in the breeze.
   旗幟在微風中飄揚。

flut.ter

v.（動詞）
flut.tered,flut.ter.ing,flut.ters
v.intr.（不及物動詞）
To wave or flap rapidly in an irregular manner:
揮動：不規(guī)則地波動或快速拍動：
例句：
curtains that fluttered in the breeze.
在微風中飄動的窗簾

To fly by a quick, light flapping of the wings.
翩然地飛：輕快拍翅地飛行
To flap the wings without flying.
鼓翅：不飛而拍翅
To move or fall in a manner suggestive of tremulous flight:
拍動，飛舞：暗指以震顫飛翔的方式移動或墜落：
例句：
.Her arms rose, fell, and fluttered with the rhythm of the song.(Evelyn Waugh)
.她的手臂升起、落下并隨著歌曲的節(jié)奏震動.(伊夫琳·沃)

To vibrate or beat rapidly or erratically:
急跳，顫動：快速或不穩(wěn)定地震顫或拍打：
例句：
My heart fluttered wildly.
我的心猛烈地跳動著

To move quickly in a nervous, restless, or excited fashion; flit.
急躁不安地動：緊張、不安或激動地快速移動；掠過
v.tr.（及物動詞）
To cause to flutter:
使揮動：
例句：
.fluttering her bristly black lashes as swiftly as butterflies` wings.(Margaret Mitchell)
.如蝴蝶翅膀一般忽閃著她濃密的睫毛.(瑪格麗特·米切爾)

n.（名詞）
The act of fluttering.
揮動，翩然起飛：鼓翅的行為
A condition of nervous excitement or agitation:
心緒不寧：緊張激動或騷動的狀態(tài)：
例句：
Everyone was in a flutter over the news that the director was resigning.
局長辭職的消息使每個人都極為不安

A commotion; a stir.
騷動，混亂：一場叛亂；一陣騷動
Pathology Abnormally rapid pulsation, especially of the atria or ventricles of the heart.
【病理學】 反常的急速脈動：尤指心房或心室不正常的快速搏動
Rapid fluctuation in the pitch of a sound reproduction resulting from variations in the speed of the recording or reproducing equipment.
干擾聲：在聲音被重播時由于聲速的變化而使磁帶中重播器產(chǎn)生快速震顫而失真
Chiefly British A small bet; a gamble:
【多用于英國】 小賭注，賭博：一個小賭注；一次賭博：
例句：
.If they like a flutter, Rick will get them better odds than the bookies.(John le Carré)
.如果他們喜歡冒點風險，瑞克將會提供他們比賭馬業(yè)者更大的勝算.(約翰·勒·卡里)

來源：
Middle English floteren
中古英語 floteren
from Old English floterian * see pleu-
源自 古英語 floterian *參見 pleu-

【引伸】
flut.terer
n.（名詞）
flut.tery
adj.（形容詞）
<參考詞匯><同義詞>flutter,flicker,flit,flitter,hoverThe central meaning shared by these verbs is .to move quickly, lightly, and irregularly like a bird in flight.:
該詞的中心意思是.如鳥飛行一般快速、輕巧或不規(guī)則地移動.：
例句：
children fluttering around a birthday cake;
圍著生日蛋糕蹦跳雀躍的孩子們；

例句：
flames that flickered in the night;
黑夜中閃爍的火光；

例句：
guests flitting from table to table;
在酒席各個桌子之間穿來穿去的客人；

例句：
sunlight flittering over the ocean;
在海面上閃爍的點點陽光；

例句：
admirers hovering around a celebrity.
圍著名人的一群崇拜者