I was watching an agadmator video explaining a game between two chess engines, and at one point in the video after a knight move, agadmator talks about how that knight then became "basically a monster knight", and therefore must be taken. He then talks more about some other games involving "monster knights", but never really explains what he means by "monster knight".
My common sense is telling me that a "monster knight" is simply a knight that is well positioned, but from the way that agadmator talked about the concept, it seemed to me like there is a more precise definition of what makes a "monster knight". I googled around for a definition and didn't find it anywhere, hence why I am asking it here.
So, what's a "monster knight"?