Two Skinned Riddle

Question

When I am filled I can point the way. When I am empty nothing moves me. I have two skins - One without and one within. What am I?

Answer

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Take some away What is it that when you take away the whole, you still have some left over? Wholesome Many Words From One There is a common English word that is nine letters long. Each time you remove a letter from it it still remains an English word - from nine letters right down to a single letter. What is the original word and what are the words that it becomes after removing one letter at a time? The base word is Startling.

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