Answer:
Mouth up it gets filled, mouth down it gets empty.
What is it that leaps and runs and yet, has no feet?
What is seen in the middle of march and april?
Round and round I go never stopping in a continuous flow. I hang out with numbers each and every day and nothing ever gets on my way. What am I?
What can you keep after giving it to someone?
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.