Aún no tenemos significados para "keel over sideways".
1One of the men on a circling, snorting horse keeled over sideways.
2It was caught in a snowdrift, thrashing about and keeling over sideways.
3He decided to sleep instead and keeled over sideways into a dead faint.
4He caught up with Benny as he keeled over sideways, bringing his knees up to his chest, eyes open and staring and empty.