"Yes, the minestrone soup is vegetarian." Followed by "It's made using chicken stock, is that OK?" Or, "The veggie option for the roast lunch is just the veggies, which are vegetarian." Followed by "The roast spuds are roasted in goose fat."
I'm not veggie but Mrs Nod is (proper veggie, although not vegan) and has had both those scenarios. As has been pointed out above, "proper" vegetarians don't eat any dead animals (other than insect parts that are almost inevitably ground in flour) or products derived from them (rennet, gelatin etc, which makes cheese choice awkward and careful label reding a must!). Makes eating out in France (in particular) a pain - they don't (or at least didn't) get the concept, even sprinkling specifically ordered veggie pizza liberally with anchovies, one of the main reasons we now go further afield, although we have visited Paris once or twice, where the concept isn't as alien as it seems to be in Brittany!