v.1. To move from one side of something to another: Let's cross over the bridge.
2. To change from one condition or loyalty to another: The political party was furious when the senator crossed over and voted against the bill.
3. To extend success or popularity in one field into another: The actor successfully crossed over from the stage to the movies.
4. To extend the success or popularity of someone in one field into another: The jazz musician hoped the media exposure would cross her over to a pop audience.
5. To die: My uncle finally crossed over after a long illness.