What is the meaning of "narc out"?
"Editors at “The Wall Street Journal” found out that their reporter had done
that, had taken those tickets when Trump himself called the editors of the
paper to complain about their negative news coverage of him. Having
compromised this reporter by slipping him some boxing tickets that he`d
have to keep secret from his bosses, Trump then dropped the guillotine,
right? He narced that reporter out to his editor, for taking the tickets,
and then he got that dude taken off the Trump reporting beat. Bleh, right?"