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.Compare end zone(def 2), neutral zone.
Origin of blue line
First recorded in 1925–30
Words nearby blue line
blue jet,
blue john,
blue law,
blue laws,
blue lias,
blue line,
blue lips,
blue lotus,
blue mantle,
blue marlin,
blue mass
Medical definitions for blue line
blue line
n.
A bluish line along a border of the gums resulting from chronic lead poisoning.