redline

1 of 2

noun

red·​line ˈred-ˈlīn How to pronounce redline (audio)
: a recommended safety limit : the fastest, farthest, or highest point or degree considered safe
also : the red line which marks this point on a gauge

redline

2 of 2

verb

red·​line ˈred-ˌlīn How to pronounce redline (audio) -ˈlīn How to pronounce redline (audio)
redlined; redlining; redlines

intransitive verb

: to withhold home-loan funds or insurance from neighborhoods considered poor economic risks

transitive verb

: to discriminate against in housing or insurance

Examples of redline in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Underlining the importance of noise to people who buy Lamborghinis is the fact that the Temerario’s peak power comes in at 9,000rpm, but the redline is indicated at 10,250rpm. James Morris, Forbes.com, 23 May 2026 These revisions were likely inspired by Kennedy’s former personal attorney and adviser, Aaron Siri, who petitioned HHS with redlines to the ACIP charter on behalf of Informed Consent Action Network, an anti-vaccine organization run by Del Bigtree. Will Walters, STAT, 23 Apr. 2026
Verb
Despite the exhibit’s success, McMurray said there are still many stories to share about redlining. Taylor O'Connor, Kansas City Star, 2 June 2026 The Home Ownership Loan Corporation redlined maps of the 1930s show even more directly how the government and real estate industry used maps to exclude certain communities. Patty Heyda, The Conversation, 1 June 2026 See All Example Sentences for redline

Word History

First Known Use

Noun

1952, in the meaning defined above

Verb

1968, in the meaning defined at intransitive sense

Time Traveler
The first known use of redline was in 1952

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Cite this Entry

“Redline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/redline. Accessed 3 Jun. 2026.

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