Hollow

It's about decisions we take upon our lives, putting jobs/hobbies/obsessions upon everything else (like our family and friends) and then you realize that after all choices you've made to achieve your goal there is nothing but "silence".

"Turning in circles, slowing down Pulling against a closing out Easy to feed off a weaker thing Harder to say what I really mean"

First line is about how we take our lives in circles, always slowing down because of our age and etc., following this point it leads to the second line Second line refers to the attempt of doing something that is impossible. Third line is kind of self explanatory, we tend to do things that are easier (or deal with "easy people") because, well, they are easier. Fourth line is about how hard is to tell people what we really want to do, so we have 2 options: do the thing we want to and surprise everyone (for good or bad) or live with this frustration of never doing what we wanted to do for the rest of our lives.

"Hollow as a mountain All tunneled and drilled below Hollow as a mountain Crowned with a cold blue sky"

In the chorus it "jumps" to the time where we are already broken by our decision, it is pretty self explanatory.

Then it goes back to the process of turning into this "hollow mountain":

"All of your colors turn to grey Don't even matter anyway Bleeding impressions where you were tied Can't really say how you lost your mind"

First line: Grey refers to dead. Second line is saying that we don't care that we are turning into dead because we are satisfied with our decision. Third line is interesting: the definition that blood has here is that it's what is still living inside us and it's coming from something we were tied before, in this case our past lives before taking the life changing decision. Fourth line is self explanatory.

Then it goes back to the chorus, again moving in the future where the decision already broke our lives.

"Silence so loud Silence, I can't tell my up from down Silence so loud Silence, I can't tell my up from down"

Self explanatory part where it says that we lost all the contact with friends/family we had because of our decision, and life is so sad that we can't tell our "up from down".

"All of the faces life can show Withered and ugly, the one you know"

This part tells how life treated us bad because of our decision, we expected much more but all we got from it was a withered and ugly face staring at us while our life is falling into pieces.

That's my definition for the lyrics, I made this up while watching the music video...everything was clear for me after I finished watching it thinking by this point of view that I "created".