The article includes the Merriam-Webster dictionary definition of collusion:
secret agreement or cooperation especially for an illegal or deceitful purpose * acting in collusion with the enemy
The article further explains that definition and how it relates to the charges against Mr. Trump:
Liberals talk about “collusion” in connection with Trump, Jr’s meeting to paper over the fact that there was nothing wrong with it. Collecting information about corruption on the part of a candidate for office is a good thing, not a bad thing. We know from Clinton Cash that Secretary of State Hillary Clinton played a key role in turning over a large part of America’s supply of uranium to the Russians, at about the same time when Russians associated with that country’s government paid hundreds of thousands of dollars to Bill and Hillary Clinton. So we know about the quid and the quo, the only question is whether there was a pro. If the Russian lawyer had had information on this point, it would have been a public service to disclose it.
It is different, of course, if false information about a candidate is being fabricated. Thus, we can properly say that Democrats colluded in the production of a fake dossier on President Trump.
I have always felt that most of the things the Democrats accuse the Republicans of are things that the Democrats are doing. I think the make-believe case against Donald Trump, Jr., is an example of this.
The Democrats have so altered the definition of collusion that it could theoretically apply to any conversation with anyone who was remotely connected to any country other than America. It will be interesting to see if karma is going to show up in the near future.