Definitions
1.NounA drawing, document, etc. that has been marked for correction or modification.
2.NounThe maximum speed, temperature, pressure, etc., at which a device (such as the engine in a car, aircraft, etc.) is designed to operate.
3.VerbTo mark a drawing or document for correction or modification.
4.VerbTo operate a device at one or more redlines.
To run an internal combustion engine to its maximum or maximum recommended speed.
5.VerbTo run an internal combustion engine to its maximum or maximum recommended speed.
6.VerbTo deny or complicate access to services (such as banking, insurance, or healthcare) to residents in specific, often racially determined, areas.
7.VerbTo achieve audio levels that will cause clipping (indicated by red in an audio meter).