tadpole

noun6

1. •
   A young toad or frog in its larval stage of development that lives in water, has a tail and no legs, and, like a fish, breathes through gills.
2. •
   The aquatic larva of any amphibian.
3. •
   (informal) A small child.

   • Shouldn't you tadpoles be in bed? — 1970
4. •
   A child's basic drawing of a human being, having a detailed head but only sticks for the body and limbs.
5. •
   A type of cargo bike that has two wheels in front and one in back.
6. •
   (informal, offensive) An insignificant person.

   • Woman's voice: You impudent imp! You tadpole! You shrimp! — 1900