blue line

American  

noun

Ice Hockey.

1. either of two lines of the color blue that are parallel to and equidistant from the goal lines and divide the rink into three zones of equal size.

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Etymology

Origin of blue line

First recorded in 1925–30

Example Sentences

After its inauguration, the Green Line will be followed by the Blue Line, which will track the Nile linking Cairo to Aswan, and the Red Line, which will connect the Red Sea cities of Hurghada and Safaga inland to Luxor.

From Barron's

Far ahead, where the land met the sky, the dark blue line of the ocean gradually came into view.

From Literature

The blue line in the chart below shows the relative price-to-book ratio — a valuation metric for growth stocks versus value stocks — while the orange line shows the difference in return on equity between growth and value stocks.

From MarketWatch

Malinski, a defenseman, doubled the advantage less than seven minutes later, blasting a shot from just inside the blue line through traffic and by goalie Darcy Kuemper.

From Los Angeles Times

Pozole rojo is October: the bowl I ate on my first fall day back in Chicago as an adult, perched on a pleather barstool beneath the rattle of the Blue Line, wondering if I could ever feel at home in the place I was born.

From Salon