Noun
regiolect (plural regiolects)
A lect spoken in a particular geographical region.
Synonyms: regionalect, geolect, topolect
In the Tyrolean and other Bavarian regiolect the prefix *da can be found, which form perfective aspects. Source: Internet
Brandenburgish speakers mostly switched to the Standard German-based regiolect of Berlin. Source: Internet
While Eastfalian has lost speakers to Standard German, Westfalian has lost speakers to Standard German and Standard German based regiolect of the Rhine-Ruhr area. Source: Internet