The Collaborative International Dictionary
White list
White list \White list\
A list of business concerns regarded as worthy of patronage by reason of compliance with certain conditions, as in regard to treatment of employees; as, the white list of the Consumers' League. [Cant]
(New York Stock Exchange) The official list of all transactions, published daily on white paper, divided into sales from 10 to 12, 12 to 2, and 2 to 3.
Wiktionary
white list
n. (alternative form of whitelist English)