I dont see it here, so figured someone's gotta post it. Here is the definition of veganism as made by the vegan society circa 1944:
"Veganism is a philosophy and way of living which seeks to exclude—as far as is possible and practicable—all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose; and by extension, promotes the development and use of animal-free alternatives for the benefit of animals, humans and the environment. In dietary terms it denotes the practice of dispensing with all products derived wholly or partly from animals."
Could be a good idea to put the definition in the community description. Rule 1 already implies that this is about the ethical aspect and not just plantbased diet, but this would be more clear I guess.