Answer:
What word has kst in the middle, in the beginning, and at the end?
My first is twice in apple but not once in tart. My second is in liver but not in heart. My third is in giant and also in ghost. Whole Iām best when I am roast.
You can spin, wheel and twist. But this thing can turn without moving.
The higher I climb, the hotter I engage. I cannot escape from my crystal cage.
What's as small as a mouse but guards a house like a lion?
You use it between your head and your toes, the more it works the thinner it grows.