Skirret is a somewhat obscure vegetable that is actually a member of the carrot family. While it may not be the most well-known vegetable out there, it does have a few synonyms that you may be interested in learning. The first is Sium sisarum, which is the scientific name for the vegetable. A few other synonyms that are sometimes used include crummock and water parsnip. While skirret may not be the most well-known vegetable out there, it is actually quite delicious when prepared correctly. It has a sweet flavor that is similar to parsnips, and can be used in a wide variety of recipes, both sweet and savory.