That should read
éminence grises
meaning "gray eminence".
It is a French expression meaning a behind the scenes power that wields its power without an official position. For example, the MSM has de facto control over the minds of the American Sheeple although nobody has officially given them that power.
So, ummm, what exactly is a F--- ? ;-)
“So, ummm, what exactly is a F-— ?”
In the immortal words of Redd Foxx: If you don’t know what “F-—” is, “P-—”! :>)