To surge or roll in billows.
To swell out or bulge.
A large wave, swell, surge, or undulating mass of something, such as water, smoke, fabric or sound
To twist and turn; to wriggle; to roll over.
To feel nauseous, to churn (of stomach).
To wobble, to totter, to waver; to walk with an unsteady gait.
An unsteady walk; a staggering or wobbling.
A rumble of the stomach.