overturn—turn upside down; fall over:
- Pollock’s car crashed into a clump of trees and overturned.
turn over—
1. = overturn:
- It was less than a hundred feet from the crossing when the car turned over and threw out the two occupants.
2. turn oneself to face the other way:
- I heard the clock, but then I turned over and went back to sleep.
3. (of an activity) continue at a usual or slow speed:
- After a good start, the organization is now just turning over, and is in need of fresh ideas.
4. (of goods) be sold or disposed of:
- In a grocery store, milk turns over more rapidly than, say, canned asparagus.