Welche is a Gallo-Romance dialect of Lorrain spoken in Bas-Rhin and Haut-Rhin in the western Alsace in France. The varieties of this dialect are the variety of Bruche, the variety of Villé, the variety of Lièpvre, the variety of Kaysersberg and the variety of Orbey. Welche is a dialect without numeric strength.
Welche is the French spelling of Welsch, a German word given to foreigners (i.e. non-Germanic-speaking people), derived from the term Walha. The word has the same linguistic roots as "Welsh", but is not at all similar to the Welsh language.
Due to its proximity to German-speaking areas, a lot of words have been borrowed from German.