Boudin (French pronunciation: [budɛ̃]) is a type of blood sausage found in several French-speaking cultures. The added ingredients vary in French, Luxembourgish, Belgian, Swiss, Québecois, Acadian, Aostan, Louisiana Creole, and Cajun cuisine. Some variations such as boudin blanc contain no blood but retain the name. Etymology. The Anglo-Norman word boudin meant 'sausage', 'blood sausage', or 'entrails' in general. Its origin is unclear. It has been traced both to Romance and to Germanic roots, but there is not good evidence for either (cf. boudin).
https://en.wikipedia.org/wiki/Boudin