blueline

[ bloo-lahyn ]
/ ˈbluˌlaɪn /

noun Printing.

a print made on light-sensitive paper and used as a proof for checking the position of stripped-up negatives or positives and copy prior to platemaking.

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Also blue.

Origin of blueline

Definition for blueline (2 of 2)

blue line

noun Ice Hockey.

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.
Also called zone line .

Origin of blue line

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for blueline

blue line

n.

A bluish line along a border of the gums resulting from chronic lead poisoning.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.