Yes. Stephenie explicitly talks about three of the titles on her website. (Just a friendly tip: autore web-sites tend to have a lot of information about the libri they write.) The Twilight Wiki also gives the meaning behind some of the titles.
In regards to link, Meyer says this: Twilight was not the easiest book to title. When I started sending out queries, I called it Forks for lack of a better idea. The first thing my agent advised me was that the titolo was going to have to change. We played around with a lot of different titles, and nothing seemed to convey the right feel. We brainstormed through emails for about a week. The word twilight was on a lista of "words with atmosphere" that I sent her. Though these words were meant to be used in combination with something else, the word twilight stood out to both of us. We decided to try it out, and, after a little adjustment time, it started to work for both of us. It isn't absolutely perfect; to be honest, I don't think there is a perfect titolo for this book.
She says this about link:The term "new moon" refers to the phase of the moon opposite a full moon. It is when the sun is on the opposite side of the moon from us and thus the bright side of the moon is not visible from earth. This is the darkest kind of night. New Moon is the darkest period of Bella's life.
Twilight Wiki says this about link:The title, Eclipse, is a reference to Jacob and Edward. While talking to Bella, Jacob refers to Edward as an eclipse, after Bella refers to him as her personal sun. In the end, an eclipse will always overpower the rays of the sun.
And, finally, Meyer says this about link:Breaking Dawn's cover is a metaphor for Bella's progression throughout the entire saga. She began as the weakest (at least physically, when compared to Vampiri#From Dracula to Buffy... and all creatures of the night in between. and werewolves) player on the board: the pawn. She ended as the strongest: the queen. In the end, it's Bella that brings about the win for the Cullens.
Maybe if te tried really hard to put the symbolism there? I've seen some people do it. Like: Jacob is Bella's New Moon, and Edward is the full white moon that disappeared. There were titolo drops, hehe.