redline

or red-line

[ verb red-lahyn; noun red-lahyn ]
See synonyms for redline on Thesaurus.com
verb (used with object),red·lined, red·lin·ing.
  1. to treat by redlining (an area or neighborhood).

  2. to establish the recommended safe speed of (an airplane): The bomber is redlined at 650 miles an hour.

  1. to draw a canceling red line through (an item on a list).

  2. to mark or designate for cancellation, rejection, dismissal, or the like: club members redlined for unpaid dues.

  3. to cause (an airplane) to be grounded.

verb (used without object),red·lined, red·lin·ing.
  1. to engage in redlining.

noun
  1. Automotive.

    • the maximum rotational speed, or angular velocity, of the engine crankshaft that is considered safe: often measured in rpm.

    • a red line or boundary of a red area that delineates such a value, as on a tachometer.

Origin of redline

1
First recorded in 1940–45; red1 + line1

Other words from redline

  • redliner, noun

Words Nearby redline

Other definitions for red line (2 of 2)

red line

noun
  1. Ice Hockey. a line of the color red that is parallel to and equidistant from the goal lines and divides the rink in half.

  2. a limit, point, or boundary beyond which one may not go without incurring negative consequences: The use of chemical weapons is a red line, which, if crossed, could trigger military action.

Origin of red line

2
First recorded in 1960–65

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use redline in a sentence

British Dictionary definitions for redline (1 of 2)

redline

/ (ˈrɛdˌlaɪn) /


verb(tr)
  1. (esp of a bank or group of banks) to refuse a loan to (a person or country) because of the presumed risks involved

  2. to restrict people's access to goods or services on the basis of the area in which they live

British Dictionary definitions for red line (2 of 2)

red line

noun
  1. a point beyond which a person or group is not prepared to negotiate

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012