Glufretarian Share definition Flag a person whos diet consists of gluten free and non-meat products with the exception of fish. A combination of gluten free and pescatarian eating. I don't eat wheat or meat products, but I love me some shrimp! That is why I am a glufretarian. Glufretarian by the original glufretarian October 21, 2012 Get the Glufretarian mug.