Answer:
Not my sister nor my brother but still the child of my mother and father. Who am I?
How do you spell hard water with only three letters?
What must you give before you can keep it?
Up on high I wave away but not a word can I say.
Touch this and you'll regret it. But if it's cold, you won't forget it. What is it?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.