Definition of wambles:
(n) :
(dialect) A rumble of the stomach.
(v) :
(dialect) To feel nauseous, to churn (of stomach).
(n) :
(dialect) An unsteady walk; a staggering or wobbling.
(v) :
(dialect) To wobble, to totter, to waver; to walk with an unsteady gait.
(v) :
(dialect) To twist and turn; to wriggle; to roll over.
(n) :
(obsolete) Nausea; seething; bubbling.