Answer:
Whiling away the hours of flowers, Walking through fields of gold. Preening and pruning in lights fading hours, For petals to freeze in the cold. What is it?
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
Until I am measured I am not known, Yet how you miss me when I have flown.
Each morning I appear to lie at your feet, all day I follow no matter how fast you run. Yet I nearly perish in the midday sun.
I am seen in the water. If seen in the sky, I am in the rainbow, a jay's feather, and lapis lazuli.
What is so fragile that saying its name breaks it?