To spasm or shake violently.
To move with a stop-start motion, as if experiencing a strong resistance or when decelerating brusquely.
Jerky playback caused by converting between frame rates; telecine judder
A spasmodic shaking.
To feel nauseous, to churn (of stomach).
To twist and turn; to wriggle; to roll over.
To wobble, to totter, to waver; to walk with an unsteady gait.
An unsteady walk; a staggering or wobbling.
A rumble of the stomach.