A particular instance where a coin is launched in the air, and whichever side that it lands on finalises a decision.
An uncertain selection between two outcomes of similar likelihood, or between two objects of similar quality.
A hasty game of cards or similar.
A state of agitation.
The rapid variation of signal parameters, such as amplitude, phase, and frequency.
A small bet or risky investment.
The act of fluttering; quick and irregular motion.
An extremely dangerous divergent oscillation caused by a positive feedback loop between the elastic deformation of an object and the aerodynamic forces acting on it, potentially resulting in rapid structural failure.
An abnormal rapid pulsation of the heart.
To be in a state of agitation or uncertainty.
To subject to a lie detector test.
Of a winged animal: to flap the wings without flying; to fly with a light flapping of the wings.
To flap or wave quickly but irregularly.
To undergo divergent oscillations (potentially to the point of causing structural failure) due to a positive feedback loop between elastic deformation and aerodynamic forces.
To cause something to flap.
To drive into disorder; to throw into confusion.