green line

WordReference Random House Unabridged Dictionary of American English © 2026

green′ line′, (sometimes caps.)

1. Government (in Lebanon) a demarcation line that divides predominantly Christian East Beirut and predominantly Moslem West Beirut.
2. Government any similar demarcation line between two hostile communities, as between Greek and Turkish Cypriots in Nicosia.

Collins Concise English Dictionary © HarperCollins Publishers::

green line noun

1. (sometimes capitals) a line of demarcation between two hostile communities