Verb (5-dan, る, intransitive)
1. to be overturned; to be reversed; to turn over; to capsize
ひっくり返る可能性はある。There is a possibility of it being overturned.
2. to fall down; to tumble down; to topple over; to lie on one's back
その拍子にバランスを崩して、仰向けにひっくり返る。At that moment I lose my balance and fall flat on my back.