(flutters, fluttering, fluttered)
1.
If something thin or light flutters, or if you flutter it, it moves up and down or from side to side with a lot of quick, light movements.
Her chiffon skirt was fluttering in the night breeze.
...a butterfly fluttering its wings.
...the fluttering white lace handkerchief.
VERB: V, V n, V-ing
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Flutter is also a noun.
...a flutter of white cloth.
N-COUNT
2.
If something light such as a small bird or a piece of paper flutters somewhere, it moves through the air with small quick movements.
The paper fluttered to the floor...
The birds were active, whirring and fluttering among the trees.
VERB: V adv/prep, V
3.
If you have a flutter, you have a small bet on something such as a horse race. (BRIT INFORMAL)
I had a flutter on five horses.
= bet
N-COUNT: oft N on n