Dictionary.com
Thesaurus.com

colour line

British  

noun

  1. the social separation of racial groups within a community (esp in the phrase to cross the colour line )

"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

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.

Hundreds of floral tributes of every colour line the castle's gates, gleaming in the mid-morning sunshine.

From BBC • Sep. 10, 2022

“I’m sure if it wasn’t for Joe Louis, the colour line in baseball would not have been broken for another 10 years,” he said.

From Reuters • May 12, 2020

Gwilym Mumford Part one of Ken Burns's superb documentary on Jack Johnson, who in 1908 became the first black  heavyweight champion, defying all attempts to draw a "colour line".

From The Guardian • Feb. 15, 2013

Collette was widely recorded and was a mentor to younger players, and was especially proud to have breached the colour line in Hollywood's television and recording studios.

From The Guardian • Oct. 6, 2010

The mind of every woman, especially of a woman with an artistic bias, is not without a secret harmony of colour, line and proportion.

From The Choice of Life by Leblanc, Georgette