Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A barrier to communication, understanding, or action.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a fortification 1,500 miles long built across northern China in the 3rd century BC; it averages 6 meters in width
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[After the Great Wall of China.]
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