Verb. See the definition of Ill. - To do something very well, or "ill" at any given time. Used in the context of rap and hip hop, sometimes it can mean to "drop lyrics of fury".
That man was so eloquent the other night, you could say he "KJ Ecclipsed" the song.
"You just KJ Eclipsed that speech, well done"
"You just KJ Eclipsed that speech, well done"
by Chuck Laundromat June 6, 2009