The story
By analogy with Thin Red Line. “Blue” refers to the color of the uniforms of many police departments.
Etymology from Wiktionary, CC BY-SA 4.0.
thin blue line
Today it means: The police. Full definition →
Today it means: The police. Full definition →
By analogy with Thin Red Line. “Blue” refers to the color of the uniforms of many police departments.
Etymology from Wiktionary, CC BY-SA 4.0.