Answer:
Long and think, red within, with a nail at the end.
What word is a plural, but when you add an "S" to the end, it becomes singular?
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around
You use it between your head and your toes, the more it works the thinner it grows.
Lynn likes grapes but not potatoes. She likes squash but not lettuce, and she likes peas but not onions. Following the same rule, will she like pumpkins or apples?