Answer:
There are two meanings to me. With one I may need to be broken, with the other I hold on. My favorite characteristic is my charming dimple.
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
My first is in blood and also in battle. My second is in acorn, oak, and apple. My third and fourth are both the same. In the center of sorrow and twice in refrain. My fifth starts eternity ending here. My last is the first of last, Oh Dear.
You use it between your head and your toes, the more it works the thinner it grows.
Though I wander the earth, I am no longer here. I am pale and I chill everyone near. Who am I?
I am the kind of an ant that's good at math. What am I?