redline

or red-line

[ verb red-lahyn; noun red-lahyn ]
/ verb ˈrɛdˌlaɪn; noun ˈrɛdˈlaɪn /

verb (used with object), red·lined, red·lin·ing.

verb (used without object), red·lined, red·lin·ing.

to engage in redlining.

noun

Automotive.
  1. the maximum rotational speed, or angular velocity, of the engine crankshaft that is considered safe: often measured in rpm.
  2. a red line or boundary of a red area that delineates such a value, as on a tachometer.

Origin of redline

First recorded in 1940–45; red1 + line1

Related forms

red·lin·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for redline

British Dictionary definitions for redline

redline

/ (ˈrɛdˌlaɪn) /

verb (tr)

(esp of a bank or group of banks) to refuse a loan to (a person or country) because of the presumed risks involved
to restrict people's access to goods or services on the basis of the area in which they live
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