Fetching details from the dictionary...

to turn over; to turn upside down; to turn up; to turn inside out; to turn out
to knock over; to tip over
to overturn (e.g. a decision); to upset; to reverse
パンケーキを上手にひっくり返すのは難しい。
It's hard to flip pancakes well.
子供が牛乳のコップをひっくり返してしまった。
The child knocked over the glass of milk.
常識をひっくり返すような発見が報告された。
A discovery that overturns common sense was reported.