blue line
Americannoun
Etymology
Origin of blue line
First recorded in 1925–30
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
For three years the blue line lived below the green line.
From MarketWatch ● May 21, 2026
So when they did finally turn him out, he dragged himself to the blue line, and got on without paying, and he didn’t see any cops, and he didn’t get arrested.
From Slate ● Jan. 27, 2026
But Kopitar put the Kings in front to stay 31 seconds later, redirecting in a Mikey Anderson shot from the blue line for his 20th goal of the season.
From Los Angeles Times ● Apr. 11, 2025
The last time I visited, I sat by the window, with the blue line buzzing overhead, and slipped one of those postcards into an envelope addressed to one of my closest friends in California.
From Salon ● Apr. 10, 2025
The blue line had come around the bend.
From "The Killer Angels: The Classic Novel of the Civil War" by Michael Shaara
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.