Meaning: Start functioning
Example: The fans CUT IN when the engine starts getting too hot.
Meaning: Drive in front of another vehicle without warning
Example: A car CUT IN and nearly caused an accident.
Example: We were having a conversation when he came up and CUT IN.
Meaning: Include someone in a deal that makes money
Example: We had to CUT the police IN on the deal to avoid trouble.
Meaning: Mix fat and flour until the combine
Example: CUT the butter IN with the flour.