WordNet
colour line
n. barrier preventing blacks from participating in various activities with whites [syn: color bar, colour bar, color line, Jim Crow]
Usage examples of "colour line".
I never could understand how he knew just where to draw the colour line, since the Indian and I were of about the same complexion.
Someone from the Race Relations Board might get you for trying to cross the colour line.
At any rate, the colour line in the depression keeps changing all the time.