I have a simpler definition:
white privilege is thought-terminating cliché which doesn't actually exist
I guess dictionary,com joins the ranks of unreliable dictionaries. And no, the disclaimer right at the end doesn't count:
This is not meant to be a formal definition of white privilege like most terms we define on Dictionary.com, but is rather an informal word summary that hopefully touches upon the key aspects of the meaning and usage of white privilege that will help our users expand their word mastery.
If the disclaimer where placed before the definition it would be acceptable. But not at the end,
What Does white privilege Mean? | Pop Culture by Dictionary.com