Diminutive

1. Something of very small size or value; an insignificant thing.
2. Tending to diminish.
3. Below the average size; very small; little.
4. A derivative from a noun, denoting a small or a young object of the same kind with that denoted by the primitive; as, gosling, eaglet, lambkin.
5. Expressing diminution; as, a diminutive word.