He said that was his red line in the negotiation.
A boundary or limit that should not be crossed.
The red line on the map shows the train route.
A specific route or path marked in red, often used in transportation.
She marked the mistakes with a red line.
A line drawn in red ink, often used for editing or marking.
The manager decided to red line the budget for next year.
To set a limit or boundary that should not be exceeded.
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