Hi,
in check if in your dictionary there is a meaning similar to "used to emphasize your description of somethig or someone".
I see it as the equivalent of "so" in sentences like
You are so beautiful.
Your new car is so nice.
The people in this forum are so friendly.
That "so" is used to emphasize an adjective, "such" is used in the samme way to emphasize a noun (also noun+adjective):
They are such nice people.
I felt such an idiot.
He's such a geek.Hope now it's a little bit clearer
![Smile [:)]](/emoticons/emotion-1.gif)
Edit: btw, this thread should be moved to the vocabulary section, I think.