The act of fluttering; quick and irregular motion.
the flutter of a fan
A state of agitation.
An abnormal rapid pulsation of the heart.
A small bet or risky investment.
A hasty game of cards or similar.
(audio) The rapid variation of signal parameters, such as amplitude, phase, and frequency.
To flap or wave quickly but irregularly.
flags fluttering in the wind
Of a winged animal: to flap the wings without flying; to fly with a light flapping of the wings.
To cause something to flap.
A bird flutters its wings.
To drive into disorder; to throw into confusion.
To be in a state of agitation or uncertainty.
To be frivolous.