Definitions
1.nounThe act of fluttering; quick and irregular motion."the flutter of a fan"
2.nounA state of agitation.
3.nounAn abnormal rapid pulsation of the heart.
4.nounA small bet or risky investment.
5.nounA hasty game of cards or similar.
6.noun(audio) The rapid variation of signal parameters, such as amplitude, phase, and frequency.
7.verbTo flap or wave quickly but irregularly."flags fluttering in the wind"
8.verbOf a winged animal: to flap the wings without flying; to fly with a light flapping of the wings.
9.verbTo cause something to flap."A bird flutters its wings."
10.verbTo drive into disorder; to throw into confusion.
11.verbTo be in a state of agitation or uncertainty.
12.verbTo be frivolous.