If you join the Vegetarian Society you promise not to eat Fish, Flesh or Fowl. The Dictionary definition is vegetarian (ˌvɛdʒɪˈtɛərɪən ) Veggies who eat Cheese and Eggs and sometime referred to as Lacto Vegetarians. Definitions noun a person who advocates or practices vegetarianism adjective relating to, advocating, or practicing vegetarianism (cookery) strictly, consisting of vegetables and fruit only, but usually including milk, cheese, eggs, etc