The crossword solution for the term 'EGG STARTER' is OVI, which stands for Oviparous Vertebrates and Invertebrates. Oviparous animals are those that lay eggs, and this includes both vertebrates (animals with a backbone) and invertebrates (animals without a backbone). This term is used to describe the reproductive process of many animals, including birds, reptiles, amphibians, fish, and some insects.