v.1. To bring the bottom of something to the top or vice versa; invert something: The farmer turned over the soil with a plow. The angry mob attacked the police car and turned it over.
2. To shift the position of, as by rolling from one side to the other: I turned over the box to read the instructions on the back. You have to turn the page over to read the rest of the story.
3. To shift one's position by rolling from one side to the other: The puppy turned over and lay on its back.
4. To rotate; cycle: The engine turned over but wouldn't start.
5. To think about something; consider something: I spent all night turning over what you said yesterday. She turned the problem over in her mind.
6. To transfer possession or control of someone or something to another; surrender someone or something: The CEO turned over the company to her son when she retired. If you find any evidence connected to a crime, you should turn it over to the authorities.
7. Sports To lose possession of something, such as a ball: Our quarterback turned over the ball five times in one game. The visiting team turned the ball over on their first play.
8. To do business to the extent or amount of something: The company turns over $1 million each year.
9. To seem to lurch or heave convulsively: My stomach turned over when the roller coaster started moving.
10. To search someplace thoroughly: The police turned over the house looking for evidence. The burglars had turned the place over but couldn't find the jewels they were looking for.