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Redline

//ˈɹɛd.laɪn// noun, verb

Definitions

Noun

1
A drawing, document, etc. that has been marked for correction or modification.
2
The maximum speed, temperature, pressure, etc., at which a device (such as the engine in a car, aircraft, etc.) is designed to operate.

Verb

1
To mark a drawing or document for correction or modification.
2
discriminate in selling or renting housing in certain areas of a neighborhood wordnet
3
To operate a device at one or more redlines.
4
To operate a device at one or more redlines.; To run an internal combustion engine to its maximum or maximum recommended speed.
5
To deny or complicate access to services (such as banking, insurance, or healthcare) to residents in specific, often racially determined, areas. Canada, US
"Already ‘redlined’ by profit-hungry telcos, the inhabitants of poor inner city areas can be shut out of the new on-line services through lack of money."

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6
To achieve audio levels that will cause clipping (indicated by red in an audio meter).

Etymology

Etymology 1

From red + line, originating with the frequent use of red pen or pencil to mark corrections on drawings and documents (1), and the red markings on a tachometer (2).

Etymology 2

From red + line, originating with the frequent use of red pen or pencil to mark corrections on drawings and documents (1), and the red markings on a tachometer (2).

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