Answer:
Mouth up it gets filled, mouth down it gets empty.
Timid or weak people are said to not have these.
I have eighty-eight keys but cannot open a single door? What am I?
You could do this to a motion, see it on a watch, or place this in a race.
A section of the calendar dedicated to mother nature.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.