redline

To refuse to provide mortgages, insurance, or other goods or services to areas deemed a poor economic risk, particularly when the residents are nonwhite.

To reach the maximum engine speed at which an engine is designed to be safely operated.

To mark or highlight edited text, as with a red line, to distinguish it from unedited portions of a document.

To practice redlining in (an area or community), as in declining to provide mortgages.

To remove from operational status because of mechanical defects or the need for scheduled maintenance.