Chinese Wall

noun Informal.

Great Wall of China.
an insuperable barrier or obstacle, as to understanding.

Origin of Chinese Wall

First recorded in 1905–10

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for chinese wall

Historical Examples of chinese wall

But the Chinese-wall blockade was tripartite; not confined to closing of the ocean ports.
Four Years in Rebel Capitals
T. C. DeLeon

British Dictionary definitions for chinese wall

Chinese wall

noun

a notional barrier between the parts of a business, esp between the market makers and brokers of a stock-exchange business, across which no information should pass to the detriment of clients
an insurmountable obstacle

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012